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 Leporinus amblyrhynchus Garavello, Britski, 1987 Fig. 4 Body elongated; greatest depth contained 3.8 to 4.3, and caudal peduncle depth 10.0 to 10.2 times in SL; head length 3.9 to 4.0, predorsal distance 2.0, caudal peduncle length 7.0 to 7.9 in SL; snout length 2.0 to 2.5, horizontal orbital diameter 2.9 to 3.8 and least interorbital width 6.7 to 8.4 in HL. Mouth subterminal; premaxilla and dentary with 3 teeth, no maxillary teeth. Lateral line with 37-40 pored scales; transverse series above lateral line with 5 scale rows and below with 4 scale rows. Dorsal fin with 12, pectoral fin with 18, pelvic fin with 9, anal fin with 10 and caudal fin with 19 rays ( Garavello, Britski, 1987 ). Ground color pale yellow; dark-brown longitudinal band along lateral line, from posterior margin of opercle to caudal-fin base; 10-12 dark-brown transverse bars on dorsal surface, extending downward, not reaching longitudal band. Hyaline fins; distal margin of dorsal fin black ( Graça, Pavanelli, 2007 ). Maximum standard length. 100.5 mm ( Graça, Pavanelli, 2007 ). Distribution. Río Paraná basin.