Ichthyofauna of the lower course of the Negro river drainage, Patagonia Argentina Author Soricetti, Mariano Author Morawicki, Santiago Author Guardiola Rivas, Fredy José Author Guidi, Catalina Author Quezada, Facundo Author Almirón, Adriana Edith Author Solimano, Patricio José text Check List 2020 2020-07-24 16 4 895 905 http://dx.doi.org/10.15560/16.4.895 journal article 10.15560/16.4.895 1809-127X Psalidodon pampa ( Casciotta, Almirón & Azpelicueta, 2005) Figure 3D Material examined. ARGENTINA • 1 ♀ , 73 mm ; Site 2; 40°42ʹ48ʺS , 063°23ʹ08ʺW ; 22 Nov. 2016 ; M. Sorice- tti leg.; MPCN-Ict 4 . • 1 ♀ , 47 mm ; Site 2; 40°42ʹ48ʺS , 063°23ʹ08ʺW ; 22 Nov. 2016 ; M. Soricetti leg.; MPCN- Ict 31 . • 1 ♂ , 49 mm ; Site 2; 40°42ʹ48ʺS , 063°23ʹ08ʺW ; 22 Nov. 2016 ; P. Solimano leg.; MPCN-Ict 32 . • 1 ♀ , 53 mm ; Site 2; 40°42ʹ48ʺS , 063°23ʹ08ʺW ; 24 Apr. 2017 ; F. Guardiola Rivas leg.; MPCN-Ict 33 . • 1 ♂ , 62 mm ; Site 2; 40°42ʹ48ʺS , 063°23ʹ08ʺW ; 24 Apr. 2017 ; M. Sorice- tti leg.; MPCN-Ict 34 . • 1 ♀ , 74 mm ; Site 2; 40°42ʹ48ʺS , 063°23ʹ08ʺW ; 22 Nov. 2016 ; M. Soricetti leg.; MPCN-Ict 35 . • 1 ♀ , 41 mm ; Site 4; 40°43ʹ15ʺS , 063°36ʹ02ʺW ; 21 Aug. 2016 ; F. Guardiola Rivas leg.; MPCN-Ict 36 . • 1 ♂ , 45 mm ; Site 4; 40°43ʹ15ʺS , 063°36ʹ02ʺW ; 30 May 2017 ; M. Soric- etti leg.; MPCN-Ict 37 . • 1 ♂ , 48 mm ; Site 4; 40°43ʹ15ʺS , 063°36ʹ02ʺW ; 23 May 2017 ; P. Solimano leg.; MPCN-Ict 38 .• 1 ♀ , 51 mm ; Site 4; 40°43ʹ15ʺS , 063°36ʹ02ʺW ; 23 Aug. 2016 ; M. Soricetti leg.; MPCN-Ict 39 . • 1 ♂ , 51 mm ; Site 4; 40°43ʹ15ʺS , 063°36ʹ02ʺW ; 21 Aug. 2016 ; F. Guardiola Ri- vas leg.; MPCN-Ict 40 . • 1 ♀ , 51 mm ; Site 4; 40°43ʹ15ʺS , 063°36ʹ02ʺW ; 21 Aug. 2016 ; M. Soricetti leg.; MPCN- Ict 41 . • 1 ♀ , 64 mm ; Site 4; 40°43ʹ15ʺS , 063°36ʹ02ʺW ; 23 May. 2017 ; P. Solimano leg.; MPCN-Ict 42 . Figure 4 . Number of species of each origin expressed as percentages of the total of species captured in the lower course of the Negro river drainage. Abbreviations: ONE, other Neotropical ecoregion; PE, native from Patagonia ecoregion. Table 2. List of species collected in the lower course of the Negro river drainage, Argentina. Abbreviations: ONE,other Neotropical ecoregion; PE, Patagonia ecoregion.

Order/family/species	Origin	1	2	Sampling sites 3 4 5		6	7	Collection code
Atheriniformes
Atherinopsidae
Odontesthes bonariensis (Valenciennes,1835)	ONE	X	X	MPCN-Ict 1, 14 to 18
Odontesthes hatcheri (Eigenmann,1909)	PE	X	X	MPCN-Ict 2,19 to 24
Characiformes
Characidae
Cheirodon interruptus (Jenyns,1842)	ONE	X	X	MPCN-Ict 3,25to 30
Psalidodon pampa ( Casciotta,Almirón & Azpelicueta,2005 )	ONE	X	X	MPCN-Ict 4,31 to 42
Cypriniformes
Cyprinidae
Cyprinus carpio Linnaeus,1758	Exotic	X	X	X	X	X	MPCN-Ict 5,43 to 46
Cyprinodontiformes
Anablepidae
Jenynsia lineata (Jenyns,1842)	ONE	X	X	X	X	MPCN-Ict 6,47 to 55
Poeciliidae
Cnesterodon decemmaculatus (Jenyns,1842)	ONE	X	X	X	MPCN-Ict 7,56 to 65
Galaxiiformes
Galaxiidae
Galaxias maculatus (Jenyns,1842)	PE	X	MPCN-Ict 9,66
Mugiliformes
Mugilidae
Mugil liza (Valenciennes,1863)	Marine	X	MPCN-Ict 8
Perciformes
Percichthyidae
Percichthys trucha (Cuvier & Valenciennes,1840)	PE	X	X	MPCN-Ict 10,67 to 74
Pleuronectiformes
Paralichthyidae
Paralichthys brasiliensis (Ranzani,1840)	Marine	X	X	MPCN-Ict 11,75,76
Siluriformes
Ariidae
Genidens barbus (Lacepède,1803)	Marine	X	MPCN-Ict 13,82 to 85
Callichthyidae
Corydoras paleatus (Jenyns,1842)	ONE	X	X	MPCN-Ict 12,77 to 81

Identification. Body compressed. Dorsal and ventral profile of body slightly convex. Mouth terminal. Lower jaw slightly prognathous. Two rows of teeth on premax- illa; inner row with five tricuspidate or pentacuspidate teeth; single small and unicuspidate or tricuspidate tooth in the maxillary bone. Dentary with three or four large pentacuspidate teeth followed by three to four small teeth. Third infraorbital not contacting laterosensory canal of preopercle. Lateral line complete with 35–37 perforated scales. Four scales in contact with the supraoccipital bone. Anal fin with iii–v, 17–20 rays.