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<mods:title id="89ADAD22732CDAAA136E51DE70ADF7F5">African weakly electric fishes of the genus Petrocephalus (Osteoglossomorpha: Mormyridae) of Odzala National Park, Republic of the Congo (Lékoli River, Congo River basin) with description of five new species</mods:title>
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<treatment id="0394455B7001B459B8BFA5FFC28ED550" ID-DOI="http://doi.org/10.5281/zenodo.6202196" ID-GBIF-Taxon="119395514" ID-Zenodo-Dep="6202196" LSID="urn:lsid:plazi:treatment:0394455B7001B459B8BFA5FFC28ED550" httpUri="http://treatment.plazi.org/id/0394455B7001B459B8BFA5FFC28ED550" lastPageId="18" lastPageNumber="19" pageId="15" pageNumber="16">
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<taxonomicName id="4C3D8FCE7001B444B8BFA5FFC365D4AB" ID-CoL="4FDWP" authority="Sauvage, 1883" authorityName="Sauvage" authorityYear="1883" box="[151,589,701,727]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="balayi">
<emphasis id="B949285F7001B444B8BFA5FFC365D4AB" bold="true" box="[151,589,701,727]" pageId="15" pageNumber="16">
<emphasis id="B949285F7001B444B8BFA5FFC0BDD4AB" bold="true" box="[151,405,701,727]" italics="true" pageId="15" pageNumber="16">Petrocephalus balayi</emphasis>
<bibRefCitation id="EFAC89BC7001B444B9B3A5FFC365D4AB" author="Sauvage" box="[411,589,701,727]" pageId="15" pageNumber="16" refString="Sauvage, H. E. (1883) Descriptions de quelques poissons de la collection du Museum d'Histoire Naturelle. Bulletin de la Societe Philomatique de Paris, 7, 156 - 161." type="journal article" year="1883">Sauvage, 1883</bibRefCitation>
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<taxonomicName id="4C3D8FCE7001B444B8BFA447C052D560" ID-CoL="6RRBX" box="[151,378,773,796]" class="Actinopterygii" family="Mormyridae" genus="Mormyrus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="catostoma">
<emphasis id="B949285F7001B444B8BFA447C052D560" box="[151,378,773,796]" italics="true" pageId="15" pageNumber="16">Mormyrus catostoma</emphasis>
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<treatmentCitation id="0A9CD25C7001B444B9BDA447C347D560" author="Gunther" box="[405,623,773,796]" page="116" pageId="15" pageNumber="16" year="1867">
<bibRefCitation id="EFAC89BC7001B444B9BDA447C316D560" author="Gunther" box="[405,574,773,796]" pageId="15" pageNumber="16" refString="Gunther, A. (1867) New fishes from the Gaboon and Gold Coast. Annals and Magazine of Natural History, 20, 110 - 117." type="journal article" year="1867">Günther (1867)</bibRefCitation>
: 116
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(
<emphasis id="B949285F7001B444BA56A447C38ED560" box="[638,678,773,796]" italics="true" pageId="15" pageNumber="16">non</emphasis>
<taxonomicName id="4C3D8FCE7001B444BA85A447C51CD560" ID-CoL="6RRBX" authority="Gunther, 1866" authorityName="Gunther" authorityYear="1866" box="[685,1076,773,796]" class="Actinopterygii" family="Mormyridae" genus="Mormyrus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="catostoma">
<emphasis id="B949285F7001B444BA85A447C2B8D560" box="[685,912,773,796]" italics="true" pageId="15" pageNumber="16">Mormyrus catostoma</emphasis>
<bibRefCitation id="EFAC89BC7001B444BBBFA447C51CD560" author="Gunther" box="[919,1076,773,796]" pageId="15" pageNumber="16" refString="Gunther, A. (1866) Catalogue of the Fishes in the British Museum, volume 6. London, 368 pp." type="book" year="1866">Günther, 1866</bibRefCitation>
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).
<taxonomicName id="4C3D8FCE7001B444B8BFA467C303D540" ID-CoL="4FDWP" authority="Sauvage (1883)" authorityName="Sauvage" authorityYear="1883" box="[151,555,805,828]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="balayi">
<emphasis id="B949285F7001B444B8BFA467C051D540" box="[151,377,805,828]" italics="true" pageId="15" pageNumber="16">Petrocephalus balayi</emphasis>
<treatmentCitation id="0A9CD25C7001B444B9A8A467C303D540" author="Sauvage" box="[384,555,805,828]" page="159" pageId="15" pageNumber="16" year="1883">
<bibRefCitation id="EFAC89BC7001B444B9A8A467C303D540" author="Sauvage" box="[384,555,805,828]" pageId="15" pageNumber="16" refString="Sauvage, H. E. (1883) Descriptions de quelques poissons de la collection du Museum d'Histoire Naturelle. Bulletin de la Societe Philomatique de Paris, 7, 156 - 161." type="journal article" year="1883">Sauvage (1883)</bibRefCitation>
</treatmentCitation>
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: 159.
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</paragraph>
<paragraph id="8B82F44D7001B444B8BFA407C37ED520" blockId="15.[151,1233,773,956]" box="[151,598,837,860]" pageId="15" pageNumber="16">
<treatmentCitationGroup id="AB2DD3637001B444B8BFA407C37ED520" box="[151,598,837,860]" pageId="15" pageNumber="16">
<taxonomicName id="4C3D8FCE7001B444B8BFA407C07ED520" ID-CoL="6S3CC" box="[151,342,837,860]" class="Actinopterygii" family="Mormyridae" genus="Mormyrus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="ballayi">
<emphasis id="B949285F7001B444B8BFA407C07ED520" box="[151,342,837,860]" italics="true" pageId="15" pageNumber="16">Mormyrus ballayi</emphasis>
</taxonomicName>
<treatmentCitation id="0A9CD25C7001B444B959A407C37AD520" author="Sauvage" box="[369,594,837,860]" page="195" pageId="15" pageNumber="16" year="1884">
<bibRefCitation id="EFAC89BC7001B444B959A407C335D520" author="Sauvage" box="[369,541,837,860]" pageId="15" pageNumber="16" refString="Sauvage, H. E. (1884) Note sur des poissons de Franceville, Haut Ogooue. Bulletin de la Societe Zoologique de France, 9, 193 - 198." type="journal article" year="1884">Sauvage (1884)</bibRefCitation>
: 195
</treatmentCitation>
.
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</paragraph>
<paragraph id="8B82F44D7001B444B8BFA427C3D1D5C0" blockId="15.[151,1233,773,956]" pageId="15" pageNumber="16">
<taxonomicName id="4C3D8FCE7001B444B8BFA427C0A8D500" ID-CoL="6S3CC" box="[151,384,869,892]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="ballayi">
<emphasis id="B949285F7001B444B8BFA427C0A8D500" box="[151,384,869,892]" italics="true" pageId="15" pageNumber="16">Petrocephalus ballayi</emphasis>
</taxonomicName>
<bibRefCitation id="EFAC89BC7001B444B9B3A427C365D500" author="Pellegrin" box="[411,589,869,892]" pageId="15" pageNumber="16" refString="Pellegrin, J. (1908) Sur une seconde collection de poissons recueillis par M. E. Haug a Ngomo. Bulletin de la Societe Philomatique de Paris, 11, 184 - 190." type="journal article" year="1908">Pellegrin (1908)</bibRefCitation>
: 185. -
<bibRefCitation id="EFAC89BC7001B444BA86A427C24AD500" author="Boulenger" box="[686,866,869,892]" pageId="15" pageNumber="16" refString="Boulenger, G. A. (1909 - 1916) Catalogue of the Freshwater Fishes of Africa in the British Museum (Natural History). Wheldon and Wesley, London, 4 volumes." type="journal volume" year="1909">
Boulenger (
<date id="FF83D28D7001B444BB03A427C24AD500" box="[811,866,869,892]" pageId="15" pageNumber="16" value="1909" valueMax="1916">1909</date>
</bibRefCitation>
1916): 52. - Gosse (1984): 108.
<taxonomicName id="4C3D8FCE7001B444B8BFA4C7C314D5E0" ID-CoL="6RRCD" authority="Gunther (1896)" authorityName="Gunther" authorityYear="1896" box="[151,572,901,924]" class="Actinopterygii" family="Mormyridae" genus="Mormyrus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="amblystoma">
<emphasis id="B949285F7001B444B8BFA4C7C0A5D5E0" box="[151,397,901,924]" italics="true" pageId="15" pageNumber="16">Mormyrus amblystoma</emphasis>
<bibRefCitation id="EFAC89BC7001B444B9BCA4C7C314D5E0" author="Gunther" box="[404,572,901,924]" pageId="15" pageNumber="16" refString="Gunther, A. (1896) Report of a collection of reptiles and fishes made by Miss M. H. Kingsley during her travels in the Ogowe River and in Old Calabar. Annals and Magazine of Natural History, 6, 261 - 285." type="journal article" year="1896">Günther (1896)</bibRefCitation>
</taxonomicName>
: 281. -
<bibRefCitation id="EFAC89BC7001B444BAB6A4C7C27AD5E0" author="Boulenger" box="[670,850,901,924]" pageId="15" pageNumber="16" refString="Boulenger, G. A. (1909 - 1916) Catalogue of the Freshwater Fishes of Africa in the British Museum (Natural History). Wheldon and Wesley, London, 4 volumes." type="journal volume" year="1909">
Boulenger (
<date id="FF83D28D7001B444BB33A4C7C27AD5E0" box="[795,850,901,924]" pageId="15" pageNumber="16" value="1909" valueMax="1916">1909</date>
</bibRefCitation>
1916): 52. [Odzala field identification:
<taxonomicName id="4C3D8FCE7001B444B9EDA4E7C376D5C0" ID-CoL="6M4J" box="[453,606,933,956]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="genus">
<emphasis id="B949285F7001B444B9EDA4E7C376D5C0" box="[453,606,933,956]" italics="true" pageId="15" pageNumber="16">Petrocephalus</emphasis>
</taxonomicName>
sp. 4, OTU 4]
</paragraph>
<paragraph id="8B82F44D7001B444B8BFA4A8C5A3D233" blockId="15.[151,1437,1002,2036]" pageId="15" pageNumber="16">
<emphasis id="B949285F7001B444B8BFA4A8C1D0D278" bold="true" box="[151,248,1002,1028]" pageId="15" pageNumber="16">Images.</emphasis>
<figureCitation id="1306E8C87001B444B8D7A4A8C06CD278" box="[255,324,1002,1028]" captionStart="FIGURE 6" captionStartId="16.[151,258,1883,1907]" captionTargetBox="[202,1384,444,1868]" captionTargetId="figure@16.[202,1385,444,1868]" captionTargetPageId="16" captionText="FIGURE 6. Petrocephalus balayi of the Lékoli River system of Odzala National Park, Republic of the Congo. A. Photograph of a live specimen (no scale). B. Photograph of a preserved specimen (scale bar = 1.0 cm). C. EOD waveforms. One EOD was arbitrarily selected from each of two recorded individuals, and they were superimposed together. Both EODs are scaled to the same peak-to-peak voltage, and they are plotted (head-positive up) on the same time scale as an overlay centered on the largest positive peak (scale bar = 0.2 msec)." httpUri="https://zenodo.org/record/197595/files/figure.png" pageId="15" pageNumber="16">Fig. 6</figureCitation>
A, photo of a live specimen from Odzala,
<figureCitation id="1306E8C87001B444BB1BA4A8C251D278" box="[819,889,1002,1028]" captionStart="FIGURE 6" captionStartId="16.[151,258,1883,1907]" captionTargetBox="[202,1384,444,1868]" captionTargetId="figure@16.[202,1385,444,1868]" captionTargetPageId="16" captionText="FIGURE 6. Petrocephalus balayi of the Lékoli River system of Odzala National Park, Republic of the Congo. A. Photograph of a live specimen (no scale). B. Photograph of a preserved specimen (scale bar = 1.0 cm). C. EOD waveforms. One EOD was arbitrarily selected from each of two recorded individuals, and they were superimposed together. Both EODs are scaled to the same peak-to-peak voltage, and they are plotted (head-positive up) on the same time scale as an overlay centered on the largest positive peak (scale bar = 0.2 msec)." httpUri="https://zenodo.org/record/197595/files/figure.png" pageId="15" pageNumber="16">Fig. 6</figureCitation>
B, photo of a preserved specimen from Odzala and
<figureCitation id="1306E8C87001B444B8E2A352C009D256" box="[202,289,1040,1066]" captionStart="FIGURE 14" captionStartId="39.[151,257,1863,1887]" captionTargetBox="[155,1412,647,1813]" captionTargetId="figure@39.[151,1436,642,1841]" captionTargetPageId="39" captionText="FIGURE 14. Historical illustrations of Petrocephalus species described from Congo or Lower Guinea that occur in Odzala. The drawings were reproduced from the following sources: Petrocephalus binotatus from Pellegrin (1928); Petrocephalus balayi from Boulenger (1909 1916); Petrocephalus microphthalmus from Poll (1967); Petrocephalus christyi from Boulenger (1920); Petrocephalus sauvagii from Boulenger (1909 1916); and Petrocephalus grandoculis from Boulenger (1920)." httpUri="https://zenodo.org/record/197603/files/figure.png" pageId="15" pageNumber="16">Fig. 14</figureCitation>
, drawing of the
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of
<taxonomicName id="4C3D8FCE7001B444BA5DA352C2A0D255" ID-CoL="6RRCD" box="[629,904,1040,1065]" class="Actinopterygii" family="Mormyridae" genus="Mormyrus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="amblystoma">
<emphasis id="B949285F7001B444BA5DA352C2A0D255" box="[629,904,1040,1065]" italics="true" pageId="15" pageNumber="16">Mormyrus amblystoma</emphasis>
</taxonomicName>
from
<bibRefCitation id="EFAC89BC7001B444BBFAA352C5B3D256" author="Boulenger" box="[978,1179,1040,1066]" pageId="15" pageNumber="16" refString="Boulenger, G. A. (1909 - 1916) Catalogue of the Freshwater Fishes of Africa in the British Museum (Natural History). Wheldon and Wesley, London, 4 volumes." type="journal volume" year="1909">
Boulenger (
<date id="FF83D28D7001B444BC76A352C5B3D256" box="[1118,1179,1040,1066]" pageId="15" pageNumber="16" value="1909" valueMax="1916">1909</date>
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1916). Photos of the preserved
<typeStatus id="54864AEF7001B444B938A377C05ED233" box="[272,374,1077,1103]" pageId="15" pageNumber="16" type="holotype">holotype</typeStatus>
of
<taxonomicName id="4C3D8FCE7001B444B9B5A377C3BED232" ID-CoL="4FDWP" box="[413,662,1077,1102]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="balayi">
<emphasis id="B949285F7001B444B9B5A377C3BED232" box="[413,662,1077,1102]" italics="true" pageId="15" pageNumber="16">Petrocephalus balayi</emphasis>
</taxonomicName>
in
<bibRefCitation id="EFAC89BC7001B444BA94A377C28BD233" box="[700,931,1077,1103]" pageId="15" pageNumber="16" refString="Lavoue, S., Hopkins, C. D. &amp; Kamdem Toham, A. (2004) The Petrocephalus (Pisces, Osteoglossomorpha, Mormyridae) of Gabon, Central Africa, with the description of a new species. Zoosystema, 26, 511 - 535." type="journal article">
Lavoué
<emphasis id="B949285F7001B444BB33A377C266D232" box="[795,846,1077,1102]" italics="true" pageId="15" pageNumber="16">et al</emphasis>
(2004)
</bibRefCitation>
and
<bibRefCitation id="EFAC89BC7001B444BBF4A377C5A0D233" author="Harder" box="[988,1160,1077,1103]" pageId="15" pageNumber="16" refString="Harder, W. (2000) Mormyridae and other Osteoglossomorpha. World Biodiversity database, CD - ROM series, ETI BioInformatics, Amsterdam." type="book" year="2000">Harder (2000)</bibRefCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="C327A7C67001B444B8EEA318C3F8D376" pageId="15" pageNumber="16" type="materials_examined">
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<emphasis id="B949285F7001B444B8EEA318C054D208" bold="true" box="[198,380,1114,1140]" pageId="15" pageNumber="16">
<typeStatus id="54864AEF7001B444B8EEA318C02BD208" box="[198,259,1114,1140]" pageId="15" pageNumber="16">Type</typeStatus>
material.
</emphasis>
<typeStatus id="54864AEF7001B444B9ACA318C0DCD208" box="[388,500,1114,1140]" pageId="15" pageNumber="16" type="holotype">Holotype</typeStatus>
,
<collectionCode id="ED2C6C887001B444BA28A318C372D208" LSID="urn:lsid:biocol.org:col:34988" box="[512,602,1114,1140]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34988" name="Museum National d'Histoire Naturelle" pageId="15" pageNumber="16">MNHN</collectionCode>
A 6297, sex undet.,
<quantity id="4CC559A87001B444BB65A318C29ED208" box="[845,950,1114,1140]" metricMagnitude="-2" metricUnit="m" metricValue="8.55" pageId="15" pageNumber="16" unit="mm" value="85.5">85.5 mm</quantity>
<collectionCode id="ED2C6C887001B444BB95A318C2CBD208" box="[957,995,1114,1140]" pageId="15" pageNumber="16">SL</collectionCode>
.
<collectingCountry id="F32AB4DD7001B444BBC6A318C517D208" box="[1006,1087,1114,1140]" name="Gabon" pageId="15" pageNumber="16">Gabon</collectingCountry>
, Ogooué River, without more precision, Expedition Savorgnan de Brazza, Noël Ballay coll.
</paragraph>
<paragraph id="8B82F44D7001B444B8EEA3E7C3F8D376" blockId="15.[151,1437,1002,2036]" pageId="15" pageNumber="16">
<emphasis id="B949285F7001B444B8EEA3E7C08CD2C3" bold="true" box="[198,420,1189,1215]" pageId="15" pageNumber="16">Other specimens.</emphasis>
We examined two other specimens from Odzala National Park (see specimen list provided in the section &quot;additional material examined&quot;). We also examined other specimens from the Lower
<collectingCountry id="F32AB4DD7001B444B8BFA3B2C1C4D376" box="[151,236,1264,1290]" name="Guinea-Bissau" pageId="15" pageNumber="16">Guinea</collectingCountry>
province [listed in
<bibRefCitation id="EFAC89BC7001B444B9E7A3B2C3EDD376" box="[463,709,1264,1290]" pageId="15" pageNumber="16" refString="Lavoue, S., Hopkins, C. D. &amp; Kamdem Toham, A. (2004) The Petrocephalus (Pisces, Osteoglossomorpha, Mormyridae) of Gabon, Central Africa, with the description of a new species. Zoosystema, 26, 511 - 535." type="journal article">
Lavoué
<emphasis id="B949285F7001B444BA06A3B2C341D375" box="[558,617,1264,1289]" italics="true" pageId="15" pageNumber="16">et al.</emphasis>
(2004)
</bibRefCitation>
].
</paragraph>
</subSubSection>
<subSubSection id="C327A7C67001B444B8EEA257C32DD003" pageId="15" pageNumber="16" type="diagnosis">
<paragraph id="8B82F44D7001B444B8EEA257C32DD003" blockId="15.[151,1437,1002,2036]" pageId="15" pageNumber="16">
<emphasis id="B949285F7001B444B8EEA257C06ED353" bold="true" box="[198,326,1301,1327]" pageId="15" pageNumber="16">Diagnosis.</emphasis>
The following diagnosis is based on all examined specimens of
<taxonomicName id="4C3D8FCE7001B444BC4FA257C5F9D352" box="[1127,1233,1301,1327]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="balayi">
<emphasis id="B949285F7001B444BC4FA257C55ED352" box="[1127,1142,1301,1326]" italics="true" pageId="15" pageNumber="16">P</emphasis>
.
<emphasis id="B949285F7001B444BCA0A257C5F9D352" box="[1160,1233,1301,1326]" italics="true" pageId="15" pageNumber="16">balayi</emphasis>
</taxonomicName>
, regardless their geographic origins.
<taxonomicName id="4C3D8FCE7001B444B9A2A279C3A4D328" box="[394,652,1339,1364]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="balayi">
<emphasis id="B949285F7001B444B9A2A279C3A4D328" box="[394,652,1339,1364]" italics="true" pageId="15" pageNumber="16">Petrocephalus balayi</emphasis>
</taxonomicName>
is distinguished from all other
<taxonomicName id="4C3D8FCE7001B444BC25A279C593D328" box="[1037,1211,1339,1364]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="genus">
<emphasis id="B949285F7001B444BC25A279C593D328" box="[1037,1211,1339,1364]" italics="true" pageId="15" pageNumber="16">Petrocephalus</emphasis>
</taxonomicName>
species in Central Africa by the following combination of characteristics. Dorsal fin with 2022 branched rays. Anal fin with 26 or 27 branched rays. Eye small (4.5 ≤ HL/ED, range = 4.54.9). Mouth very wide (HL/MW ≤ 3.9, range = 2.73.9), associated with a very characteristic head shape when viewed from below. Fourteen teeth or more in the upper jaw (range = 1421). Twenty-eight teeth or more in the lower jaw (range = 2838). Melanin pattern consisting of the following: (1) a distinct black round mark on each side of the body below dorsal fin origin; (2) an ovoid mark on each side at the base of the caudal peduncle, not extending onto the upper and lower parts of the caudal fin; (3) a black mark, sometimes diffuse but always present, at the base of the pectoral fins. The EOD is of normal polarity.
</paragraph>
</subSubSection>
<subSubSection id="C327A7C67001B45AB8EEA1C8C434D188" lastPageId="17" lastPageNumber="18" pageId="15" pageNumber="16" type="description">
<paragraph id="8B82F44D7001B45BB8EEA1C8C214D7EE" blockId="15.[151,1437,1002,2036]" lastBlockId="16.[151,1437,152,402]" lastPageId="16" lastPageNumber="17" pageId="15" pageNumber="16">
<emphasis id="B949285F7001B444B8EEA1C8C077D0D8" bold="true" box="[198,351,1674,1700]" pageId="15" pageNumber="16">Description.</emphasis>
<tableCitation id="C6BFC1F67001B444B94FA1C8C0E8D0D8" box="[359,448,1674,1700]" captionStart="TABLE 4" captionStartId="17.[151,239,151,175]" captionTargetBox="[151,1436,432,1333]" captionTargetPageId="17" captionText="TABLE 4. Principal morphometric ratios and meristic counts for the holotype (MNHN A 6297), two non-type specimens from Odzala (CU 87851, CU 88111) and seven non type specimens from Gabon of Petrocephalus balayi Sauvage, 1883. (Abbreviations: o = sex category &quot; other &quot; [i. e., not an obvious mature male, but rather a female or immature male]; Std- Dev = standard deviation; Min-Max = minimum-maximum)." httpUri="http://table.plazi.org/id/DF42A4C5701FB45AB8BFA7D5C23CD76E" pageId="15" pageNumber="16" tableUuid="DF42A4C5701FB45AB8BFA7D5C23CD76E">Table 4</tableCitation>
presents morphometric ratios and meristic data for the
<typeStatus id="54864AEF7001B444BC7FA1C8C596D0D8" box="[1111,1214,1674,1700]" pageId="15" pageNumber="16" type="holotype">holotype</typeStatus>
(from the Ogooué River in
<collectingCountry id="F32AB4DD7001B444B8D7A1F2C067D0B6" box="[255,335,1712,1738]" name="Gabon" pageId="15" pageNumber="16">Gabon</collectingCountry>
) and for non-type specimens (from
<collectingCountry id="F32AB4DD7001B444BAD0A1F2C26ED0B6" box="[760,838,1712,1738]" name="Gabon" pageId="15" pageNumber="16">Gabon</collectingCountry>
or Odzala) separately. Data given in the following description (e.g., ranges) correspond to the two Odzala specimens we examined, except where explicit reference is made to the
<typeStatus id="54864AEF7001B444B9E0A1B8C31FD168" box="[456,567,1786,1812]" pageId="15" pageNumber="16" type="holotype">holotype</typeStatus>
.
<taxonomicName id="4C3D8FCE7001B444BA6BA1B9C26FD168" box="[579,839,1787,1812]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="species" species="balayi">
<emphasis id="B949285F7001B444BA6BA1B9C26FD168" box="[579,839,1787,1812]" italics="true" pageId="15" pageNumber="16">Petrocephalus balayi</emphasis>
</taxonomicName>
, described by
<bibRefCitation id="EFAC89BC7001B444BBD5A1B8C5E9D168" author="Sauvage" box="[1021,1217,1786,1812]" pageId="15" pageNumber="16" refString="Sauvage, H. E. (1883) Descriptions de quelques poissons de la collection du Museum d'Histoire Naturelle. Bulletin de la Societe Philomatique de Paris, 7, 156 - 161." type="journal article" year="1883">Sauvage (1883)</bibRefCitation>
, is a large, robust species within the genus
<taxonomicName id="4C3D8FCE7001B444B9EDA062C358D145" box="[453,624,1824,1849]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="15" pageNumber="16" phylum="Chordata" rank="genus">
<emphasis id="B949285F7001B444B9EDA062C358D145" box="[453,624,1824,1849]" italics="true" pageId="15" pageNumber="16">Petrocephalus</emphasis>
</taxonomicName>
(maximum SL observed in Odzala =
<quantity id="4CC559A87001B444BC10A062C58BD146" box="[1080,1187,1824,1850]" metricMagnitude="-2" metricUnit="m" metricValue="9.559999999999999" pageId="15" pageNumber="16" unit="mm" value="95.6">95.6 mm</quantity>
SL,
<typeStatus id="54864AEF7001B444BCF6A062C46FD146" box="[1246,1351,1824,1850]" pageId="15" pageNumber="16" type="holotype">holotype</typeStatus>
=
<quantity id="4CC559A87001B444BD40A062C1EED123" metricMagnitude="-2" metricUnit="m" metricValue="8.55" pageId="15" pageNumber="16" unit="mm" value="85.5">85.5 mm</quantity>
SL). Body ovoid, longer than high (SL/H = 2.52.7,
<typeStatus id="54864AEF7001B444BB7FA007C2EAD123" box="[855,962,1861,1887]" pageId="15" pageNumber="16" type="holotype">holotype</typeStatus>
= 2.8) and laterally compressed. Head length between 3.3 and 3.4 times (
<typeStatus id="54864AEF7001B444BA0EA028C3A6D1F8" box="[550,654,1898,1924]" pageId="15" pageNumber="16" type="holotype">holotype</typeStatus>
= 3.3) in standard length. Head width 1.9 times (
<typeStatus id="54864AEF7001B444BCE1A028C419D1F8" box="[1225,1329,1898,1924]" pageId="15" pageNumber="16" type="holotype">holotype</typeStatus>
= 2.2) in head length. Snout short (8.4 ≤ HL/SNL ≤ 9.3,
<typeStatus id="54864AEF7001B444BAE3A0D2C21AD1D6" box="[715,818,1936,1962]" pageId="15" pageNumber="16" type="holotype">holotype</typeStatus>
= 8.1), wide and square-shaped. Mouth wide (2.7 ≤ HL/MW ≤ 3.1,
<typeStatus id="54864AEF7001B444B97EA0F7C0E8D1B3" box="[342,448,1973,1999]" pageId="15" pageNumber="16" type="holotype">holotype</typeStatus>
= 3.4), sub-terminal, opening under the anterior half of the eye. Teeth small and bicuspid,
<quantity id="4CC559A87001B444B926A098C065D188" box="[270,333,2010,2036]" metricMagnitude="-1" metricUnit="m" metricValue="7.62" pageId="15" pageNumber="16" unit="in" value="30.0">30 in</quantity>
a single row in the lower jaw and
<quantity id="4CC559A87001B444BADFA098C24CD188" box="[759,868,2010,2036]" metricMagnitude="-1" metricUnit="m" metricValue="5.207" metricValueMax="5.334" metricValueMin="5.08" pageId="15" pageNumber="16" unit="in" value="20.5" valueMax="21.0" valueMin="20.0">2021 in</quantity>
the upper jaw. Eye small (4.5 ≤ HL/ED ≤ 4.8,
<typeStatus id="54864AEF701EB45BB8BFA7DAC1D6D6CE" box="[151,254,152,178]" pageId="16" pageNumber="17" type="holotype">holotype</typeStatus>
= 4.6). Dorsal and anal fins originate in the posterior half of the body (SL/PDD = 1.6 and SL/PAD = 1.6), with pre-dorsal distance equal to pre-anal distance. Pre-dorsal distance slightly exceeds pre-anal distance in the
<typeStatus id="54864AEF701EB45BB8CAA7A0C061D680" box="[226,329,226,252]" pageId="16" pageNumber="17" type="holotype">holotype</typeStatus>
(1.0 ≤ PDD/PAD ≤ 1.1). Dorsal fin with 22 branched rays (
<typeStatus id="54864AEF701EB45BBC3DA7A0C557D680" box="[1045,1151,226,252]" pageId="16" pageNumber="17" type="holotype">holotype</typeStatus>
= 21). Anal fin with 27 branched rays (
<typeStatus id="54864AEF701EB45BB97AA64AC097D75E" box="[338,447,264,290]" pageId="16" pageNumber="17" type="holotype">holotype</typeStatus>
= 26). Scales cover the entire body, except for the head. Lateral line visible and complete with 36 pored scales. Caudal peduncle relatively thick (1.7 ≤ CPL/CPD ≤ 1.8,
<typeStatus id="54864AEF701EB45BBCFFA66FC46AD73B" box="[1239,1346,301,327]" pageId="16" pageNumber="17" type="holotype">holotype</typeStatus>
= 2.3). Twelve circumpeduncular scales. Skin on head thick, becoming opaque with formalin fixation. Knollenorgans organized into the three rosettes named by
<bibRefCitation id="EFAC89BC701EB45BBAA6A63AC210D7EE" author="Harder" box="[654,824,376,402]" pageId="16" pageNumber="17" refString="Harder, W. (1968) Zum Aufbau der epidermalen Sinnesorgane der Mormyridae (Mormyriformes, Teleostei). Zeitschrift fur Zellforschung, 89, 212 - 224." type="journal article" year="1968">Harder (1968)</bibRefCitation>
.
</paragraph>
<caption id="DF42A4C5701EB45BB8BFA019C531D18F" httpUri="https://zenodo.org/record/197595/files/figure.png" pageId="16" pageNumber="17" targetBox="[202,1384,444,1868]" targetPageId="16">
<paragraph id="8B82F44D701EB45BB8BFA019C531D18F" blockId="16.[151,1437,1883,2035]" pageId="16" pageNumber="17">
<emphasis id="B949285F701EB45BB8BFA019C037D10F" bold="true" box="[151,287,1883,1907]" pageId="16" pageNumber="17">FIGURE 6.</emphasis>
<taxonomicName id="4C3D8FCE701EB45BB90FA01EC33DD10F" box="[295,533,1884,1907]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="16" pageNumber="17" phylum="Chordata" rank="species" species="balayi">
<emphasis id="B949285F701EB45BB90FA01EC33DD10F" box="[295,533,1884,1907]" italics="true" pageId="16" pageNumber="17">Petrocephalus balayi</emphasis>
</taxonomicName>
of the Lékoli River system of Odzala National Park, Republic of the Congo. A. Photograph of a live specimen (no scale). B. Photograph of a preserved specimen (scale bar = 1.0 cm). C. EOD waveforms. One EOD was arbitrarily selected from each of two recorded individuals, and they were superimposed together. Both EODs are scaled to the same peak-to-peak voltage, and they are plotted (head-positive up) on the same time scale as an overlay centered on the largest positive peak (scale bar = 0.2 msec).
</paragraph>
</caption>
<caption id="DF42A4C5701FB45AB8BFA7D5C23CD76E" ID-Table-UUID="DF42A4C5701FB45AB8BFA7D5C23CD76E" httpUri="http://table.plazi.org/id/DF42A4C5701FB45AB8BFA7D5C23CD76E" pageId="17" pageNumber="18" targetBox="[151,1436,432,1333]" targetIsTable="true" targetPageId="17">
<paragraph id="8B82F44D701FB45AB8BFA7D5C23CD76E" blockId="17.[151,1436,151,413]" pageId="17" pageNumber="18">
<emphasis id="B949285F701FB45AB8BFA7D5C020D6D3" bold="true" box="[151,264,151,175]" pageId="17" pageNumber="18">TABLE 4.</emphasis>
Principal morphometric ratios and meristic counts for the holotype (MNHN A6297), two non-type specimens from Odzala (CU 87851, CU 88111) and seven non type specimens from Gabon of
<taxonomicName id="4C3D8FCE701FB45ABC38A7FAC4B0D6B3" authority="Sauvage, 1883" authorityName="Sauvage" authorityYear="1883" box="[1040,1432,184,207]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="17" pageNumber="18" phylum="Chordata" rank="species" species="balayi">
<emphasis id="B949285F701FB45ABC38A7FAC5DAD6B3" box="[1040,1266,184,207]" italics="true" pageId="17" pageNumber="18">Petrocephalus balayi</emphasis>
Sauvage, 1883
</taxonomicName>
. (Abbreviations: o= sex category &quot;other&quot; [i.e., not an obvious mature male, but rather a female or immature male]; Std- Dev= standard deviation; Min-Max= minimum-maximum).
</paragraph>
</caption>
<paragraph id="8B82F44D701FB45ABAB9A664C5B0D747" blockId="17.[151,1436,151,413]" box="[657,1176,294,315]" pageId="17" pageNumber="18">
<typeStatus id="54864AEF701FB45ABAB9A664C3C2D747" box="[657,746,294,315]" pageId="17" pageNumber="18" type="holotype">Holotype</typeStatus>
Specimens from Specimens from
</paragraph>
<paragraph id="8B82F44D701FB45ABAB9A601C5A7D724" blockId="17.[151,1436,151,413]" box="[657,1167,323,344]" pageId="17" pageNumber="18">
(o)* Odzala (n=2)
<collectingCountry id="F32AB4DD701FB45ABBDDA601C51DD724" box="[1013,1077,323,344]" name="Gabon" pageId="17" pageNumber="18">Gabon</collectingCountry>
(Ogooué
</paragraph>
<paragraph id="8B82F44D701FB45ABBDDA622C55FD709" blockId="17.[151,1436,151,413]" box="[1013,1143,352,373]" pageId="17" pageNumber="18">basin) (n=7)*</paragraph>
<paragraph id="8B82F44D701FB45ABB05A6CAC434D188" blockId="17.[151,1436,151,413]" lastBlockId="17.[151,1437,1823,2036]" pageId="17" pageNumber="18">
MinMax MinMax Mean StdDev
<emphasis id="B949285F701FB45AB8EEA05DC0ACD145" bold="true" box="[198,388,1823,1849]" pageId="17" pageNumber="18">Live coloration</emphasis>
(
<figureCitation id="1306E8C8701FB45AB9BCA05DC0F1D145" box="[404,473,1823,1849]" captionStart="FIGURE 6" captionStartId="16.[151,258,1883,1907]" captionTargetBox="[202,1384,444,1868]" captionTargetId="figure@16.[202,1385,444,1868]" captionTargetPageId="16" captionText="FIGURE 6. Petrocephalus balayi of the Lékoli River system of Odzala National Park, Republic of the Congo. A. Photograph of a live specimen (no scale). B. Photograph of a preserved specimen (scale bar = 1.0 cm). C. EOD waveforms. One EOD was arbitrarily selected from each of two recorded individuals, and they were superimposed together. Both EODs are scaled to the same peak-to-peak voltage, and they are plotted (head-positive up) on the same time scale as an overlay centered on the largest positive peak (scale bar = 0.2 msec)." httpUri="https://zenodo.org/record/197595/files/figure.png" pageId="17" pageNumber="18">Fig. 6</figureCitation>
A). Body gray/silver, slightly darker dorsally. The head is also slightly darker than the rest of the body. Iridescent pigment along side of body sometimes visible with correct orientation of light. Pigmentation pattern with three black patches: (1) a distinct round black mark on each side of the body below the dorsal fin origin; (2) an ovoid black mark on each side at the base of the caudal peduncle that does not extend onto the upper and lower parts of the caudal fin; (3) a black mark, sometimes diffuse in larger individuals but always present, at the base of the pectoral fins. The fins themselves are translucent.
</paragraph>
</subSubSection>
<paragraph id="8B82F44D701FB45AB8B7A6F2C414D349" pageId="17" pageNumber="18">
<table id="F93D06ED701F4BB4B8BFA6F2C4B4D349" box="[151,1436,432,1333]" gridcols="5" gridrows="20" pageId="17" pageNumber="18">
<tr id="350DF60F701F4BB4B8BFA6F2C4B4D7B9" box="[151,1436,432,453]" gridrow="0" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA6F2C331D7B9" box="[151,537,432,453]" gridcol="0" gridrow="0" pageId="17" pageNumber="18">Standard length (mm)</th>
<th id="76DC9F73701F4BB4BAB9A6F2C393D7B9" box="[657,699,432,453]" gridcol="1" gridrow="0" pageId="17" pageNumber="18">85.5</th>
<th id="76DC9F73701F4BB4BB05A6F2C2A6D7B9" box="[813,910,432,453]" gridcol="2" gridrow="0" pageId="17" pageNumber="18">81.395.6</th>
<th id="76DC9F73701F4BB4BBDDA6F2C549D7B9" box="[1013,1121,432,453]" gridcol="3" gridrow="0" pageId="17" pageNumber="18">82.2126.0</th>
<th id="76DC9F73701F4BB4BC93A6F2C4B4D7B9" box="[1211,1436,432,453]" gridcol="4" gridrow="0" pageId="17" pageNumber="18">98.3 17.9</th>
</tr>
<tr id="350DF60F701F4BB4B8BFA69AC4B4D791" box="[151,1436,472,493]" gridrow="1" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA69AC331D791" box="[151,537,472,493]" gridcol="0" gridrow="1" pageId="17" pageNumber="18">Head length (mm)</th>
<td id="76DC9F73701F4BB4BAB9A69AC393D791" box="[657,699,472,493]" gridcol="1" gridrow="1" pageId="17" pageNumber="18">25.9</td>
<td id="76DC9F73701F4BB4BB05A69AC2A6D791" box="[813,910,472,493]" gridcol="2" gridrow="1" pageId="17" pageNumber="18">24.228.6</td>
<td id="76DC9F73701F4BB4BBDDA69AC549D791" box="[1013,1121,472,493]" gridcol="3" gridrow="1" pageId="17" pageNumber="18">23.336.0</td>
<td id="76DC9F73701F4BB4BC93A69AC4B4D791" box="[1211,1436,472,493]" gridcol="4" gridrow="1" pageId="17" pageNumber="18">28.4 4.8</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA56AC4B4D441" box="[151,1436,552,573]" gridrow="2" pageId="17" pageNumber="18" rowspan-1="1" rowspan-2="1" rowspan-3="1" rowspan-4="1">
<th id="76DC9F73701F4BB4B8BFA56AC331D441" box="[151,537,552,573]" gridcol="0" gridrow="2" pageId="17" pageNumber="18">Ratio of standard length (SL):</th>
</tr>
<tr id="350DF60F701F4BB4B8BFA512C4B4D419" box="[151,1436,592,613]" gridrow="3" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA512C331D419" box="[151,537,592,613]" gridcol="0" gridrow="3" pageId="17" pageNumber="18">SL/body height (H)</th>
<td id="76DC9F73701F4BB4BAB9A512C393D419" box="[657,699,592,613]" gridcol="1" gridrow="3" pageId="17" pageNumber="18">2.8</td>
<td id="76DC9F73701F4BB4BB05A512C2A6D419" box="[813,910,592,613]" gridcol="2" gridrow="3" pageId="17" pageNumber="18">2.52.7</td>
<td id="76DC9F73701F4BB4BBDDA512C549D419" box="[1013,1121,592,613]" gridcol="3" gridrow="3" pageId="17" pageNumber="18">2.53.0</td>
<td id="76DC9F73701F4BB4BC93A512C4B4D419" box="[1211,1436,592,613]" gridcol="4" gridrow="3" pageId="17" pageNumber="18">2.8 0.1</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA53AC4B4D4F1" box="[151,1436,632,653]" gridrow="4" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA53AC331D4F1" box="[151,537,632,653]" gridcol="0" gridrow="4" pageId="17" pageNumber="18">SL/head length (HL)</th>
<td id="76DC9F73701F4BB4BAB9A53AC393D4F1" box="[657,699,632,653]" gridcol="1" gridrow="4" pageId="17" pageNumber="18">3.3</td>
<td id="76DC9F73701F4BB4BB05A53AC2A6D4F1" box="[813,910,632,653]" gridcol="2" gridrow="4" pageId="17" pageNumber="18">3.33.4</td>
<td id="76DC9F73701F4BB4BBDDA53AC549D4F1" box="[1013,1121,632,653]" gridcol="3" gridrow="4" pageId="17" pageNumber="18">3.33.6</td>
<td id="76DC9F73701F4BB4BC93A53AC4B4D4F1" box="[1211,1436,632,653]" gridcol="4" gridrow="4" pageId="17" pageNumber="18">3.5 0.1</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA5E2C4B4D4C9" box="[151,1436,672,693]" gridrow="5" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA5E2C331D4C9" box="[151,537,672,693]" gridcol="0" gridrow="5" pageId="17" pageNumber="18">SL/pre-dorsal distance (PDD)</th>
<td id="76DC9F73701F4BB4BAB9A5E2C393D4C9" box="[657,699,672,693]" gridcol="1" gridrow="5" pageId="17" pageNumber="18">1.5</td>
<td id="76DC9F73701F4BB4BB05A5E2C2A6D4C9" box="[813,910,672,693]" gridcol="2" gridrow="5" pageId="17" pageNumber="18">1.61.6</td>
<td id="76DC9F73701F4BB4BBDDA5E2C549D4C9" box="[1013,1121,672,693]" gridcol="3" gridrow="5" pageId="17" pageNumber="18">1.51.6</td>
<td id="76DC9F73701F4BB4BC93A5E2C4B4D4C9" box="[1211,1436,672,693]" gridcol="4" gridrow="5" pageId="17" pageNumber="18">1.5 0.0</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA58AC4B4D4A1" box="[151,1436,712,733]" gridrow="6" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA58AC331D4A1" box="[151,537,712,733]" gridcol="0" gridrow="6" pageId="17" pageNumber="18">SL/pre-anal distance (PAD)</th>
<td id="76DC9F73701F4BB4BAB9A58AC393D4A1" box="[657,699,712,733]" gridcol="1" gridrow="6" pageId="17" pageNumber="18">1.6</td>
<td id="76DC9F73701F4BB4BB05A58AC2A6D4A1" box="[813,910,712,733]" gridcol="2" gridrow="6" pageId="17" pageNumber="18">1.61.6</td>
<td id="76DC9F73701F4BB4BBDDA58AC549D4A1" box="[1013,1121,712,733]" gridcol="3" gridrow="6" pageId="17" pageNumber="18">1.51.7</td>
<td id="76DC9F73701F4BB4BC93A58AC4B4D4A1" box="[1211,1436,712,733]" gridcol="4" gridrow="6" pageId="17" pageNumber="18">1.6 0.0</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA5B2C4B4D579" box="[151,1436,752,773]" gridrow="7" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA5B2C331D579" box="[151,537,752,773]" gridcol="0" gridrow="7" pageId="17" pageNumber="18">SL/dorsal fin length (DFL)</th>
<td id="76DC9F73701F4BB4BAB9A5B2C393D579" box="[657,699,752,773]" gridcol="1" gridrow="7" pageId="17" pageNumber="18">4.5</td>
<td id="76DC9F73701F4BB4BB05A5B2C2A6D579" box="[813,910,752,773]" gridcol="2" gridrow="7" pageId="17" pageNumber="18">4.24.4</td>
<td id="76DC9F73701F4BB4BBDDA5B2C549D579" box="[1013,1121,752,773]" gridcol="3" gridrow="7" pageId="17" pageNumber="18">4.35.1</td>
<td id="76DC9F73701F4BB4BC93A5B2C4B4D579" box="[1211,1436,752,773]" gridcol="4" gridrow="7" pageId="17" pageNumber="18">4.8 0.2</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA45AC4B4D551" box="[151,1436,792,813]" gridrow="8" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA45AC331D551" box="[151,537,792,813]" gridcol="0" gridrow="8" pageId="17" pageNumber="18">SL/anal fin length (AFL)</th>
<td id="76DC9F73701F4BB4BAB9A45AC393D551" box="[657,699,792,813]" gridcol="1" gridrow="8" pageId="17" pageNumber="18">3.8</td>
<td id="76DC9F73701F4BB4BB05A45AC2A6D551" box="[813,910,792,813]" gridcol="2" gridrow="8" pageId="17" pageNumber="18">3.53.5</td>
<td id="76DC9F73701F4BB4BBDDA45AC549D551" box="[1013,1121,792,813]" gridcol="3" gridrow="8" pageId="17" pageNumber="18">3.44.0</td>
<td id="76DC9F73701F4BB4BC93A45AC4B4D551" box="[1211,1436,792,813]" gridcol="4" gridrow="8" pageId="17" pageNumber="18">3.8 0.3</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA402C4B4D529" box="[151,1436,832,853]" gridrow="9" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA402C331D529" box="[151,537,832,853]" gridcol="0" gridrow="9" pageId="17" pageNumber="18">SL/caudal peduncle length (CPL)</th>
<td id="76DC9F73701F4BB4BAB9A402C393D529" box="[657,699,832,853]" gridcol="1" gridrow="9" pageId="17" pageNumber="18">5.7</td>
<td id="76DC9F73701F4BB4BB05A402C2A6D529" box="[813,910,832,853]" gridcol="2" gridrow="9" pageId="17" pageNumber="18">6.97.0</td>
<td id="76DC9F73701F4BB4BBDDA402C549D529" box="[1013,1121,832,853]" gridcol="3" gridrow="9" pageId="17" pageNumber="18">5.16.6</td>
<td id="76DC9F73701F4BB4BC93A402C4B4D529" box="[1211,1436,832,853]" gridcol="4" gridrow="9" pageId="17" pageNumber="18">6.0 0.4</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA42AC4B4D501" box="[151,1436,872,893]" gridrow="10" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA42AC331D501" box="[151,537,872,893]" gridcol="0" gridrow="10" pageId="17" pageNumber="18">SL/mouth width (MW)</th>
<td id="76DC9F73701F4BB4BAB9A42AC393D501" box="[657,699,872,893]" gridcol="1" gridrow="10" pageId="17" pageNumber="18">11.2</td>
<td id="76DC9F73701F4BB4BB05A42AC2A6D501" box="[813,910,872,893]" gridcol="2" gridrow="10" pageId="17" pageNumber="18">9.010.4</td>
<td id="76DC9F73701F4BB4BBDDA42AC549D501" box="[1013,1121,872,893]" gridcol="3" gridrow="10" pageId="17" pageNumber="18">9.313.7</td>
<td id="76DC9F73701F4BB4BC93A42AC4B4D501" box="[1211,1436,872,893]" gridcol="4" gridrow="10" pageId="17" pageNumber="18">11.1 1.3</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA4FAC4B4D5B1" box="[151,1436,952,973]" gridrow="11" pageId="17" pageNumber="18" rowspan-1="1" rowspan-2="1" rowspan-3="1" rowspan-4="1">
<th id="76DC9F73701F4BB4B8BFA4FAC331D5B1" box="[151,537,952,973]" gridcol="0" gridrow="11" pageId="17" pageNumber="18">Ratio of head length (HL):</th>
</tr>
<tr id="350DF60F701F4BB4B8BFA4A2C4B4D589" box="[151,1436,992,1013]" gridrow="12" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA4A2C331D589" box="[151,537,992,1013]" gridcol="0" gridrow="12" pageId="17" pageNumber="18">HL/snout length (SNL)</th>
<td id="76DC9F73701F4BB4BAB9A4A2C393D589" box="[657,699,992,1013]" gridcol="1" gridrow="12" pageId="17" pageNumber="18">8.1</td>
<td id="76DC9F73701F4BB4BB05A4A2C2A6D589" box="[813,910,992,1013]" gridcol="2" gridrow="12" pageId="17" pageNumber="18">8.49.3</td>
<td id="76DC9F73701F4BB4BBDDA4A2C549D589" box="[1013,1121,992,1013]" gridcol="3" gridrow="12" pageId="17" pageNumber="18">5.47.6</td>
<td id="76DC9F73701F4BB4BC93A4A2C4B4D589" box="[1211,1436,992,1013]" gridcol="4" gridrow="12" pageId="17" pageNumber="18">6.2 0.9</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA34AC4B4D261" box="[151,1436,1032,1053]" gridrow="13" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA34AC331D261" box="[151,537,1032,1053]" gridcol="0" gridrow="13" pageId="17" pageNumber="18">HL/mouth width (MW)</th>
<td id="76DC9F73701F4BB4BAB9A34AC393D261" box="[657,699,1032,1053]" gridcol="1" gridrow="13" pageId="17" pageNumber="18">3.4</td>
<td id="76DC9F73701F4BB4BB05A34AC2A6D261" box="[813,910,1032,1053]" gridcol="2" gridrow="13" pageId="17" pageNumber="18">2.73.1</td>
<td id="76DC9F73701F4BB4BBDDA34AC549D261" box="[1013,1121,1032,1053]" gridcol="3" gridrow="13" pageId="17" pageNumber="18">2.73.9</td>
<td id="76DC9F73701F4BB4BC93A34AC4B4D261" box="[1211,1436,1032,1053]" gridcol="4" gridrow="13" pageId="17" pageNumber="18">3.3 0.4</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA372C4B4D239" box="[151,1436,1072,1093]" gridrow="14" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA372C331D239" box="[151,537,1072,1093]" gridcol="0" gridrow="14" pageId="17" pageNumber="18">HL/eye diameter (ED)</th>
<td id="76DC9F73701F4BB4BAB9A372C393D239" box="[657,699,1072,1093]" gridcol="1" gridrow="14" pageId="17" pageNumber="18">4.6</td>
<td id="76DC9F73701F4BB4BB05A372C2A6D239" box="[813,910,1072,1093]" gridcol="2" gridrow="14" pageId="17" pageNumber="18">4.54.8</td>
<td id="76DC9F73701F4BB4BBDDA372C549D239" box="[1013,1121,1072,1093]" gridcol="3" gridrow="14" pageId="17" pageNumber="18">4.54.9</td>
<td id="76DC9F73701F4BB4BC93A372C4B4D239" box="[1211,1436,1072,1093]" gridcol="4" gridrow="14" pageId="17" pageNumber="18">4.7 0.1</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA31AC4B4D211" box="[151,1436,1112,1133]" gridrow="15" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA31AC331D211" box="[151,537,1112,1133]" gridcol="0" gridrow="15" pageId="17" pageNumber="18">HL/interorbital width (IOW)</th>
<td id="76DC9F73701F4BB4BAB9A31AC393D211" box="[657,699,1112,1133]" gridcol="1" gridrow="15" pageId="17" pageNumber="18">3.2</td>
<td id="76DC9F73701F4BB4BB05A31AC2A6D211" box="[813,910,1112,1133]" gridcol="2" gridrow="15" pageId="17" pageNumber="18">3.03.0</td>
<td id="76DC9F73701F4BB4BBDDA31AC549D211" box="[1013,1121,1112,1133]" gridcol="3" gridrow="15" pageId="17" pageNumber="18">2.63.1</td>
<td id="76DC9F73701F4BB4BC93A31AC4B4D211" box="[1211,1436,1112,1133]" gridcol="4" gridrow="15" pageId="17" pageNumber="18">2.8 0.2</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA3C2C4B4D2E9" box="[151,1436,1152,1173]" gridrow="16" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA3C2C331D2E9" box="[151,537,1152,1173]" gridcol="0" gridrow="16" pageId="17" pageNumber="18">HL/head width (HW)</th>
<td id="76DC9F73701F4BB4BAB9A3C2C393D2E9" box="[657,699,1152,1173]" gridcol="1" gridrow="16" pageId="17" pageNumber="18">2.2</td>
<td id="76DC9F73701F4BB4BB05A3C2C2A6D2E9" box="[813,910,1152,1173]" gridcol="2" gridrow="16" pageId="17" pageNumber="18">1.91.9</td>
<td id="76DC9F73701F4BB4BBDDA3C2C549D2E9" box="[1013,1121,1152,1173]" gridcol="3" gridrow="16" pageId="17" pageNumber="18">1.62.0</td>
<td id="76DC9F73701F4BB4BC93A3C2C4B4D2E9" box="[1211,1436,1152,1173]" gridcol="4" gridrow="16" pageId="17" pageNumber="18">1.9 0.1</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA3EAC4B4D2C1" box="[151,1436,1192,1213]" gridrow="17" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA3EAC331D2C1" box="[151,537,1192,1213]" gridcol="0" gridrow="17" pageId="17" pageNumber="18">HL/mouth position (MP)</th>
<td id="76DC9F73701F4BB4BAB9A3EAC393D2C1" box="[657,699,1192,1213]" gridcol="1" gridrow="17" pageId="17" pageNumber="18">5.9</td>
<td id="76DC9F73701F4BB4BB05A3EAC2A6D2C1" box="[813,910,1192,1213]" gridcol="2" gridrow="17" pageId="17" pageNumber="18">4.74.9</td>
<td id="76DC9F73701F4BB4BBDDA3EAC549D2C1" box="[1013,1121,1192,1213]" gridcol="3" gridrow="17" pageId="17" pageNumber="18">5.05.7</td>
<td id="76DC9F73701F4BB4BC93A3EAC4B4D2C1" box="[1211,1436,1192,1213]" gridcol="4" gridrow="17" pageId="17" pageNumber="18">5.5 0.3</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA3BAC4B4D371" box="[151,1436,1272,1293]" gridrow="18" pageId="17" pageNumber="18" rowspan-1="1" rowspan-2="1" rowspan-3="1" rowspan-4="1">
<th id="76DC9F73701F4BB4B8BFA3BAC331D371" box="[151,537,1272,1293]" gridcol="0" gridrow="18" pageId="17" pageNumber="18">Ratio of caudal peduncle length (CPL):</th>
</tr>
<tr id="350DF60F701F4BB4B8BFA262C4B4D349" box="[151,1436,1312,1333]" gridrow="19" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA262C331D349" box="[151,537,1312,1333]" gridcol="0" gridrow="19" pageId="17" pageNumber="18">CPL/caudal peduncle depth (CPD)</th>
<td id="76DC9F73701F4BB4BAB9A262C393D349" box="[657,699,1312,1333]" gridcol="1" gridrow="19" pageId="17" pageNumber="18">2.3</td>
<td id="76DC9F73701F4BB4BB05A262C2A6D349" box="[813,910,1312,1333]" gridcol="2" gridrow="19" pageId="17" pageNumber="18">1.71.8</td>
<td id="76DC9F73701F4BB4BBDDA262C549D349" box="[1013,1121,1312,1333]" gridcol="3" gridrow="19" pageId="17" pageNumber="18">1.92.2</td>
<td id="76DC9F73701F4BB4BC93A262C4B4D349" box="[1211,1436,1312,1333]" gridcol="4" gridrow="19" pageId="17" pageNumber="18">2.0 0.1</td>
</tr>
</table>
</paragraph>
<paragraph id="8B82F44D701FB45ABB05A232C0D9D097" pageId="17" pageNumber="18">
<table id="F93D06ED701F4BB4B8BFA232C42CD097" box="[151,1284,1392,1771]" gridcols="4" gridrows="8" pageId="17" pageNumber="18">
<tr id="350DF60F701F4BB4B8BFA232C42CD3F9" box="[151,1284,1392,1413]" gridrow="0" pageId="17" pageNumber="18" rowspan-0="1">
<th id="76DC9F73701F4BB4BB05A232C2A6D3F9" box="[813,910,1392,1413]" gridcol="1" gridrow="0" pageId="17" pageNumber="18">MinMax</th>
<th id="76DC9F73701F4BB4BBDDA232C57DD3F9" box="[1013,1109,1392,1413]" gridcol="2" gridrow="0" pageId="17" pageNumber="18">MinMax</th>
<th id="76DC9F73701F4BB4BC93A232C42CD3F9" box="[1211,1284,1392,1413]" gridcol="3" gridrow="0" pageId="17" pageNumber="18">Median</th>
</tr>
<tr id="350DF60F701F4BB4B8BFA2DAC42CD3D1" box="[151,1284,1432,1453]" gridrow="1" pageId="17" pageNumber="18" rowspan-1="1" rowspan-2="1" rowspan-3="1">
<th id="76DC9F73701F4BB4B8BFA2DAC381D3D1" box="[151,681,1432,1453]" gridcol="0" gridrow="1" pageId="17" pageNumber="18">Meristic counts:</th>
</tr>
<tr id="350DF60F701F4BB4B8BFA282C42CD3A9" box="[151,1284,1472,1493]" gridrow="2" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA282C381D3A9" box="[151,681,1472,1493]" gridcol="0" gridrow="2" pageId="17" pageNumber="18">Dorsal fin branched rays (DR) 21</th>
<td id="76DC9F73701F4BB4BB05A282C2A6D3A9" box="[813,910,1472,1493]" gridcol="1" gridrow="2" pageId="17" pageNumber="18">2222</td>
<td id="76DC9F73701F4BB4BBDDA282C57DD3A9" box="[1013,1109,1472,1493]" gridcol="2" gridrow="2" pageId="17" pageNumber="18">2022</td>
<td id="76DC9F73701F4BB4BC93A282C42CD3A9" box="[1211,1284,1472,1493]" gridcol="3" gridrow="2" pageId="17" pageNumber="18">22</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA2AAC42CD381" box="[151,1284,1512,1533]" gridrow="3" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA2AAC381D381" box="[151,681,1512,1533]" gridcol="0" gridrow="3" pageId="17" pageNumber="18">Anal fin branched rays (AR) 26</th>
<td id="76DC9F73701F4BB4BB05A2AAC2A6D381" box="[813,910,1512,1533]" gridcol="1" gridrow="3" pageId="17" pageNumber="18">2727</td>
<td id="76DC9F73701F4BB4BBDDA2AAC57DD381" box="[1013,1109,1512,1533]" gridcol="2" gridrow="3" pageId="17" pageNumber="18">2627</td>
<td id="76DC9F73701F4BB4BC93A2AAC42CD381" box="[1211,1284,1512,1533]" gridcol="3" gridrow="3" pageId="17" pageNumber="18">26</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA152C42CD059" box="[151,1284,1552,1573]" gridrow="4" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA152C381D059" box="[151,681,1552,1573]" gridcol="0" gridrow="4" pageId="17" pageNumber="18">Number of scales in the lateral line (SLL) 38</th>
<td id="76DC9F73701F4BB4BB05A152C2A6D059" box="[813,910,1552,1573]" gridcol="1" gridrow="4" pageId="17" pageNumber="18">3636</td>
<td id="76DC9F73701F4BB4BBDDA152C57DD059" box="[1013,1109,1552,1573]" gridcol="2" gridrow="4" pageId="17" pageNumber="18">3537</td>
<td id="76DC9F73701F4BB4BC93A152C42CD059" box="[1211,1284,1552,1573]" gridcol="3" gridrow="4" pageId="17" pageNumber="18">36</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA17AC42CD017" box="[151,1284,1592,1643]" gridrow="5" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA17AC381D017" box="[151,681,1592,1643]" gridcol="0" gridrow="5" pageId="17" pageNumber="18">Number of scale rows between the anterior base of 11 the anal fin and the lateral line (SDL)</th>
<td id="76DC9F73701F4BB4BB05A17AC2A6D017" box="[813,910,1592,1643]" gridcol="1" gridrow="5" pageId="17" pageNumber="18">1010</td>
<td id="76DC9F73701F4BB4BBDDA17AC57DD017" box="[1013,1109,1592,1643]" gridcol="2" gridrow="5" pageId="17" pageNumber="18">1012</td>
<td id="76DC9F73701F4BB4BC93A17AC42CD017" box="[1211,1284,1592,1643]" gridcol="3" gridrow="5" pageId="17" pageNumber="18">11</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA13CC42CD0C7" box="[151,1284,1662,1723]" gridrow="6" pageId="17" pageNumber="18">
<th id="76DC9F73701F4BB4B8BFA13CC381D0C7" box="[151,681,1662,1723]" gridcol="0" gridrow="6" pageId="17" pageNumber="18">Number of teeth in the upper jaw (TUJ) 16 Number of teeth in the lower jaw (TLJ) 38</th>
<td id="76DC9F73701F4BB4BB05A13CC2A6D0C7" box="[813,910,1662,1723]" gridcol="1" gridrow="6" pageId="17" pageNumber="18">2021 3030</td>
<td id="76DC9F73701F4BB4BBDDA13CC57DD0C7" box="[1013,1109,1662,1723]" gridcol="2" gridrow="6" pageId="17" pageNumber="18">1418 2837</td>
<td id="76DC9F73701F4BB4BC93A13CC42CD0C7" box="[1211,1284,1662,1723]" gridcol="3" gridrow="6" pageId="17" pageNumber="18">- -</td>
</tr>
<tr id="350DF60F701F4BB4B8BFA196C42CD097" box="[151,1284,1748,1771]" gridrow="7" pageId="17" pageNumber="18" rowspan-1="1" rowspan-2="1" rowspan-3="1">
<th id="76DC9F73701F4BB4B8BFA196C381D097" box="[151,681,1748,1771]" gridcol="0" gridrow="7" pageId="17" pageNumber="18">
*Data from Lavoué
<emphasis id="B949285F701FB45AB946A196C08CD097" box="[366,420,1748,1771]" italics="true" pageId="17" pageNumber="18">et al.</emphasis>
(2004)
</th>
</tr>
</table>
</paragraph>
<subSubSection id="C327A7C6701CB459B8EEA7D5C080D4C0" pageId="18" pageNumber="19" type="distribution">
<paragraph id="8B82F44D701CB459B8EEA7D5C286D7EE" blockId="18.[151,1437,151,812]" pageId="18" pageNumber="19">
<emphasis id="B949285F701CB459B8EEA7D5C077D6CD" bold="true" box="[198,351,151,177]" pageId="18" pageNumber="19">Distribution</emphasis>
(
<figureCitation id="1306E8C8701CB459B947A7DAC09CD6CE" box="[367,436,152,178]" captionStart="FIGURE 1" captionStartId="2.[151,255,1561,1585]" captionTargetBox="[169,1408,388,1531]" captionTargetId="figure@2.[151,1435,383,1536]" captionTargetPageId="2" captionText="FIGURE 1. Map of Africa (right) showing the entire Congo River and its main tributaries together with the neighboring Lower Guinea province (first inset at center). The boundary between the Congo and Lower Guinea provinces is shown by a dashed line. Filled black circles indicate type localities for all Petrocephalus species that were described from either province and were considered valid just prior to the present study. Exact type localities are unknown for P. b a l a y i and P. sauvagii. Based on our understanding of the chronology of Central African exploration at the time of the descriptions, we estimate these type localities to be the following: the vicinity of Pool Malebo on the Lower Congo River near the modern cities of Brazzaville and Kinshasa [4.25 ° S, 15.29 ° E] for P. sauvagii; and the vicinity of the present-day city Lambaréné on the Lower Ogooué River [0.7 ° S, 10.22 ° E] for P. b a l a y i. Second inset at the far left: detailed map of Odzala National Park, located in the Congo River basin. Within the boundaries of the park, forest is shown in green and savannah in yellow. The red oval indicates our collection area (a segment of the Lékoli drainage system, including the lower parts of two of its tributaries, the Pandaka and Lékénie Rivers)." httpUri="https://zenodo.org/record/197590/files/figure.png" pageId="18" pageNumber="19">Fig. 1</figureCitation>
).
<taxonomicName id="4C3D8FCE701CB459B9E4A7DAC3EDD6CD" box="[460,709,152,177]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="18" pageNumber="19" phylum="Chordata" rank="species" species="balayi">
<emphasis id="B949285F701CB459B9E4A7DAC3EDD6CD" box="[460,709,152,177]" italics="true" pageId="18" pageNumber="19">Petrocephalus balayi</emphasis>
</taxonomicName>
occurs in the southern part of the Lower
<collectingCountry id="F32AB4DD701CB459BC80A7DAC5D5D6CE" box="[1192,1277,152,178]" name="Guinea-Bissau" pageId="18" pageNumber="19">Guinea</collectingCountry>
province and in the
<collectingCountry id="F32AB4DD701CB459B8CAA7FFC018D6AB" box="[226,304,189,215]" name="Republic of the Congo" pageId="18" pageNumber="19">Congo</collectingCountry>
River basin, including Odzala and the Lower
<collectingCountry id="F32AB4DD701CB459BB7DA7FFC28BD6AB" box="[853,931,189,215]" name="Republic of the Congo" pageId="18" pageNumber="19">Congo</collectingCountry>
River (
<bibRefCitation id="EFAC89BC701CB459BBD5A7FFC5C3D6AB" author="David" box="[1021,1259,189,215]" pageId="18" pageNumber="19" refString="David, L. &amp; Poll, M. (1937) Contribution a la faune ichthyologique du Congo belge. Annales du Musee du Congo, Zoologie, 3, 189 - 294." type="journal article" year="1937">David &amp; Poll, 1937</bibRefCitation>
;
<bibRefCitation id="EFAC89BC701CB459BCD0A7FFC1FDD680" author="Lavoue" pageId="18" pageNumber="19" refString="Lavoue, S., Hopkins, C. D. &amp; Kamdem Toham, A. (2004) The Petrocephalus (Pisces, Osteoglossomorpha, Mormyridae) of Gabon, Central Africa, with the description of a new species. Zoosystema, 26, 511 - 535." type="journal article" year="2004">
Lavoué
<emphasis id="B949285F701CB459BD71A7FFC4BDD6AA" box="[1369,1429,189,214]" italics="true" pageId="18" pageNumber="19">et al.</emphasis>
, 2004
</bibRefCitation>
;
<bibRefCitation id="EFAC89BC701CB459B8CAA7A0C076D680" author="Poll" box="[226,350,226,252]" pageId="18" pageNumber="19" refString="Poll, M. (1939) Les poissons du Stanley Pool. Annales du Musee du Congo, Zoologie, 4, 1 - 60." type="journal article" year="1939">Poll, 1939</bibRefCitation>
;
<bibRefCitation id="EFAC89BC701CB459B942A7A0C334D680" author="Sauvage" box="[362,540,226,252]" pageId="18" pageNumber="19" refString="Sauvage, H. E. (1883) Descriptions de quelques poissons de la collection du Museum d'Histoire Naturelle. Bulletin de la Societe Philomatique de Paris, 7, 156 - 161." type="journal article" year="1883">Sauvage, 1883</bibRefCitation>
). In Odzala,
<taxonomicName id="4C3D8FCE701CB459BA9CA7A0C286D687" box="[692,942,226,251]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="18" pageNumber="19" phylum="Chordata" rank="species" species="balayi">
<emphasis id="B949285F701CB459BA9CA7A0C286D687" box="[692,942,226,251]" italics="true" pageId="18" pageNumber="19">Petrocephalus balayi</emphasis>
</taxonomicName>
seems to prefer the small tributary creeks flowing through forest. In
<collectingCountry id="F32AB4DD701CB459B9C8A64AC319D75E" box="[480,561,264,290]" name="Gabon" pageId="18" pageNumber="19">Gabon</collectingCountry>
(Lower
<collectingCountry id="F32AB4DD701CB459BAB5A64AC3DDD75E" box="[669,757,264,290]" name="Guinea-Bissau" pageId="18" pageNumber="19">Guinea</collectingCountry>
province),
<emphasis id="B949285F701CB459BBACA64AC2C5D75D" box="[900,1005,264,289]" italics="true" pageId="18" pageNumber="19">P. b a l a y i</emphasis>
occurs in the lower courses of the Ogooué River and numerous associated lakes (and their tributary streams), as well as in small coastal creeks from south of the Ogooué to the
<collectingCountry id="F32AB4DD701CB459BA1BA610C3ADD710" box="[563,645,338,364]" name="Republic of the Congo" pageId="18" pageNumber="19">Congo</collectingCountry>
River basin. Records from the upper part of the Lower
<collectingCountry id="F32AB4DD701CB459BD6BA610C4B4D710" box="[1347,1436,338,364]" name="Guinea-Bissau" pageId="18" pageNumber="19">Guinea</collectingCountry>
province and elsewhere appear to be misidentifications (
<emphasis id="B949285F701CB459BB04A63AC2B6D7ED" box="[812,926,376,401]" italics="true" pageId="18" pageNumber="19">pers. obs.</emphasis>
).
</paragraph>
<paragraph id="8B82F44D701CB459B8EEA6DFC080D4C0" blockId="18.[151,1437,151,812]" pageId="18" pageNumber="19">
<emphasis id="B949285F701CB459B8EEA6DFC324D7CB" bold="true" box="[198,524,413,439]" pageId="18" pageNumber="19">Electric organ discharge</emphasis>
(
<figureCitation id="1306E8C8701CB459BA0DA6DFC35ED7CB" box="[549,630,413,439]" captionStart="FIGURE 6" captionStartId="16.[151,258,1883,1907]" captionTargetBox="[202,1384,444,1868]" captionTargetId="figure@16.[202,1385,444,1868]" captionTargetPageId="16" captionText="FIGURE 6. Petrocephalus balayi of the Lékoli River system of Odzala National Park, Republic of the Congo. A. Photograph of a live specimen (no scale). B. Photograph of a preserved specimen (scale bar = 1.0 cm). C. EOD waveforms. One EOD was arbitrarily selected from each of two recorded individuals, and they were superimposed together. Both EODs are scaled to the same peak-to-peak voltage, and they are plotted (head-positive up) on the same time scale as an overlay centered on the largest positive peak (scale bar = 0.2 msec)." httpUri="https://zenodo.org/record/197595/files/figure.png" pageId="18" pageNumber="19">Fig. 6</figureCitation>
C). EOD recordings are only available for a small number of individuals: one specimen from the coastal river Doumvou at Doumvou,
<collectingCountry id="F32AB4DD701CB459BBD0A680C56ED7A0" box="[1016,1094,450,476]" name="Gabon" pageId="18" pageNumber="19">Gabon</collectingCountry>
[
<geoCoordinate id="EE09928A701CB459BC7CA680C581D7A0" box="[1108,1193,450,476]" direction="south" orientation="latitude" pageId="18" pageNumber="19" precision="555" value="-3.33">03.33S</geoCoordinate>
<geoCoordinate id="EE09928A701CB459BC91A680C427D7A0" box="[1209,1295,450,476]" direction="east" orientation="longitude" pageId="18" pageNumber="19" precision="555" value="10.73">10.73E</geoCoordinate>
] (
<emphasis id="B949285F701CB459BD0FA680C37AD47D" italics="true" pageId="18" pageNumber="19">
S. Lavoué &amp; V. Mamonekene coll.,
<date id="FF83D28D701CB459B992A6AAC37AD47D" box="[442,594,488,513]" pageId="18" pageNumber="19" value="2001-07-24">24 July 2001</date>
</emphasis>
) (
<bibRefCitation id="EFAC89BC701CB459BA44A6AAC270D47E" author="Lavoue" box="[620,856,488,514]" pageId="18" pageNumber="19" refString="Lavoue, S., Hopkins, C. D. &amp; Kamdem Toham, A. (2004) The Petrocephalus (Pisces, Osteoglossomorpha, Mormyridae) of Gabon, Central Africa, with the description of a new species. Zoosystema, 26, 511 - 535." type="journal article" year="2004">
Lavoué
<emphasis id="B949285F701CB459BAE6A6AAC222D47D" box="[718,778,488,513]" italics="true" pageId="18" pageNumber="19">et al.</emphasis>
, 2004
</bibRefCitation>
); and two specimens from Odzala National Park,
<collectingCountry id="F32AB4DD701CB459B8BFA54FC080D45B" box="[151,424,525,551]" name="Republic of the Congo" pageId="18" pageNumber="19">Republic of the Congo</collectingCountry>
(
<bibRefCitation id="EFAC89BC701CB459B991A54FC382D45B" author="Lavoue" box="[441,682,525,551]" pageId="18" pageNumber="19" refString="Lavoue, S., Arnegard, M. E., Sullivan, J. P. &amp; Hopkins, C. D. (2008) Petrocephalus of Odzala offer insights into evolutionary patterns of signal diversification in the Mormyridae, a family of weakly electrogenic fishes from Africa. Journal of Physiology - Paris, 102, 322 - 339." type="journal article" year="2008">
Lavoué
<emphasis id="B949285F701CB459BA34A54FC371D45A" box="[540,601,525,550]" italics="true" pageId="18" pageNumber="19">et al.</emphasis>
, 2008
</bibRefCitation>
). Among these few recordings, the overall waveform of EODs produced by
<emphasis id="B949285F701CB459B968A570C086D437" box="[320,430,562,587]" italics="true" pageId="18" pageNumber="19">P. b a l a y i</emphasis>
seems to be typical for the genus, similar to those produced by several other
<taxonomicName id="4C3D8FCE701CB459B8BFA51AC06CD40D" box="[151,324,600,625]" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="18" pageNumber="19" phylum="Chordata" rank="genus">
<emphasis id="B949285F701CB459B8BFA51AC06CD40D" box="[151,324,600,625]" italics="true" pageId="18" pageNumber="19">Petrocephalus</emphasis>
</taxonomicName>
species. EOD duration = 0.324 0.340 msec. Statistics for waveform landmarks and other EOD measurements are provided by
<bibRefCitation id="EFAC89BC701CB459BA6FA53FC210D4EB" box="[583,824,637,663]" pageId="18" pageNumber="19" refString="Lavoue, S., Arnegard, M. E., Sullivan, J. P. &amp; Hopkins, C. D. (2008) Petrocephalus of Odzala offer insights into evolutionary patterns of signal diversification in the Mormyridae, a family of weakly electrogenic fishes from Africa. Journal of Physiology - Paris, 102, 322 - 339." type="journal article">
Lavoué
<emphasis id="B949285F701CB459BA8EA53FC3C8D4EA" box="[678,736,637,662]" italics="true" pageId="18" pageNumber="19">et al.</emphasis>
(2008)
</bibRefCitation>
, who confirmed histologically that electrocytes in
<taxonomicName id="4C3D8FCE701CB459BDAEA53FC1C9D4C7" class="Actinopterygii" family="Mormyridae" genus="Petrocephalus" kingdom="Animalia" order="Osteoglossiformes" pageId="18" pageNumber="19" phylum="Chordata" rank="species" species="balayi">
<emphasis id="B949285F701CB459BDAEA53FC1C9D4C7" italics="true" pageId="18" pageNumber="19">P. balayi</emphasis>
</taxonomicName>
are of
<typeStatus id="54864AEF701CB459B91AA5E0C04CD4C0" box="[306,356,674,700]" pageId="18" pageNumber="19">type</typeStatus>
NPp.
</paragraph>
</subSubSection>
<subSubSection id="C327A7C6701CB459B8EEA585C28ED550" pageId="18" pageNumber="19" type="discussion">
<paragraph id="8B82F44D701CB459B8EEA585C28ED550" blockId="18.[151,1437,151,812]" pageId="18" pageNumber="19">
<emphasis id="B949285F701CB459B8EEA585C068D49D" bold="true" box="[198,320,711,737]" pageId="18" pageNumber="19">Remarks.</emphasis>
Almost all measurements and meristic counts of Odzala specimens fall within the range of values defined by the
<typeStatus id="54864AEF701CB459B998A5AFC336D57B" box="[432,542,749,775]" pageId="18" pageNumber="19" type="holotype">holotype</typeStatus>
and other specimens from
<collectingCountry id="F32AB4DD701CB459BB50A5AFC2F8D57B" box="[888,976,749,775]" name="Gabon" pageId="18" pageNumber="19">Gabon</collectingCountry>
. The EOD waveforms of the Odzala specimens and those from
<collectingCountry id="F32AB4DD701CB459B9E7A450C335D550" box="[463,541,786,812]" name="Gabon" pageId="18" pageNumber="19">Gabon</collectingCountry>
are similar (
<bibRefCitation id="EFAC89BC701CB459BA99A450C2B2D550" author="Lavoue" box="[689,922,786,812]" pageId="18" pageNumber="19" refString="Lavoue, S., Hopkins, C. D. &amp; Kamdem Toham, A. (2004) The Petrocephalus (Pisces, Osteoglossomorpha, Mormyridae) of Gabon, Central Africa, with the description of a new species. Zoosystema, 26, 511 - 535." type="journal article" year="2004">
Lavoué
<emphasis id="B949285F701CB459BB39A450C264D557" box="[785,844,786,811]" italics="true" pageId="18" pageNumber="19">et al.</emphasis>
, 2004
</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>