A preliminary inventory of the catfishes of the lower Rio Nhamunda, Brazil (Ostariophysi, Siluriformes) Author Collins, Rupert A. Author Duarte Ribeiro, Emanuell Author Nogueira Machado, Valeria Author Hrbek, Tomas Author Farias, Izeni Pires text Biodiversity Data Journal 2015 3 4162 4162 http://dx.doi.org/10.3897/BDJ.3.e4162 journal article http://dx.doi.org/10.3897/BDJ.3.e4162 1314-2828-3-4162 Farlowella nattereri Steindachner, 1910 Materials Type status: Other material . Occurrence: catalogNumber: 43891 ; recordedBy: Valeria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins ; individualCount: 1 ; otherCatalogNumbers: UFAM:CTGA:14331; associatedSequences: KP772581; Taxon: scientificName: Farlowella nattereri Steindachner, 1910; kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Loricariidae; genus: Farlowella; specificEpithet: nattereri; scientificNameAuthorship: Steindachner, 1910; Location: country: Brazil ; stateProvince: Para ; locality: Lower Nhamunda River ; decimalLatitude: -1.6909 ; decimalLongitude: -57.42231 ; geodeticDatum: WGS84; Identification: identifiedBy: Rupert A. Collins; Event: eventDate: 2013-11 ; Record Level: institutionCode: INPA ; basisOfRecord: PreservedSpecimen Notes Identification to species level follows Retzer and Page (1997) and Retzer (2006) based on the following characters: seven predorsal plates; dorsal fin located opposite anal fin; three rows of abdominal plates; five rows of anterior lateral plates, with middle row incomplete; plates of second lateral row diamond-shaped; fourth row of anterior lateral plates sharply keeled; odontodes on lateral plates small; snout-mouth-length / head-length> 0.5; body-depth / pelvic-fin-length <0.86; pectoral-fin-length / snout-mouth-length> 0.65; snout-mouth-length / pectoral-fin-length> 1.0; and fin spines and rays with dark spots. The above characters are consistent with F. nattereri , but some key differences in colour pattern are noted. Retzer and Page (1997) report: for most specimens of F. nattereri , the first anal and dorsal fin rays are entirely darkly pigmented (our specimen has spotted rays); a distinct dorso-lateral dark-stripe is present from base of snout to dorsal fin (this stripe was not apparent in the preserved specimen, but was observed in life); and upper and lower caudal fin lobes pigmented with dark stripes of equal size, with stripes often not reaching caudal fin base (the stripes in our specimen reached the caudal base). Retzer and Page (1997) recognise that F. nattereri probably comprises a complex of species. One individual was caught by hand from shallow, fast flowing water over a rocky/sandy substrate (sampling site NH05). The live specimen is pictured in Fig. 24 (caudal fin in Fig. 25)