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 Pimelodus ornatus Kner, 1858 Fig. 29 Body deep; greatest depth contained 3.9 to 4.2 times in SL; head length 3.1 to 3.4, anal-fin base length 8.9 to 9.2, adipose-fin base length 4.9 to 6.0, maxillary-barbel length 1.6 to 1.8 in SL; snout length 2.1 to 2.3, horizontal orbital diameter 5.0 to 5.2, least interorbital width 3.1 to. 5 in HL; orbital diameter 1.5 to 1.7 in interorbital width. Mouth terminal; dentigerous tooth plates in both premaxilla and dentary. Dorsal fin with I,6, pectoral fin with I,13-15, pelvic fin with 6 and anal fin with 11-13 rays. Ground dark-brown; light-beige longitudinal band along lateral line; light-beige oblique bar from dorsal-fin origin to pelvic-fin origin. Hyaline fins; dorsal fin with dark-brown blotch; caudal fin with dark-brown longitudinal band on each lobe ( Graça, Pavanelli, 2007 ). Maximum standard length. 330.0 mm ( Graça, Pavanelli, 2007 ). Distribution. Widespread in South America rivers. Remarks. Pimelodus ornatus is a non-native species from the upper rio Paraná and its occurrence can be associated with the filling of the Itaipu Reservoir and the consequent inundation of the Sete Quedas Falls.