Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated Author Ota, Renata Rúbia Author Deprá, Gabriel de Carvalho Author Graça, Weferson Júnio da Author Pavanelli, Carla Simone text Neotropical Ichthyology 2018 2018-06-11 16 2 1 111 journal article 10.1590/1982-0224-20170094 f68fe85c-2a4c-4625-b684-74f61398d6c2 1982-0224 3678395 Salminus hilarii Valenciennes, 1850 Fig. 6 Body elongated; greatest depth contained 3.6 to 4.1, caudal peduncle depth 9.9 to 11.8 times in SL; head length 3.6 to 3.8, predorsal distance 1.8 to 1.9, caudal peduncle length 8.6 to 8.8 in SL; snout length 3.5 to 3.8, horizontal orbital diameter 4.2 to 4.7 and least interorbital width 3.5 to 3.7 in HL. Mouth terminal; inner row of premaxilla with 9-11, outer row with 7 or 8, inner row of dentary with 30-32, outer row with 18-20 and maxilla with 30-32 teeth. Lateral line with 68-71 pored scales; transverse series above lateral line with 10 scale rows and below with 6 scale rows. Dorsal fin with 11 or 12, pectoral fin with 15-17, pelvic fin with 9 or 10, anal fin with 25-29 and caudal fin with 19 rays. Ground color silvery; dark-brown transverse band on posterior portion of caudal peduncle, extending to distal margin of median caudal-fin rays. Reddish fins ( Graça, Pavanelli, 2007 ). Maximum standard length. 340.0 mm ( Graça, Pavanelli, 2007 ). Distribution. Río Paraná , rio São Francisco, rio Tocantins , Amazon and río Orinoco basins.