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 Ossancora eigenmanni (Boulenger, 1895) Fig. 20 Body deep; greatest body depth contained 2.8 to 3.8, head length 3.4 to 4.0 times in SL; snout length contained 1.9 to 2.1, horizontal orbital diameter 2.6 to 4.9 and least interorbital width 2.6 to 3.1 times in HL; orbital diameter contained 1.3 to 1.7 times in interorbital width. Mouth terminal; with dentigerous plates in both premaxilla and dentary. Lateral line with 27-30 plates. Dorsal fin with I,6 rays, pectoral fin with I,6-7 rays, pelvic fin with 7 rays and anal fin with 12-15 rays. Ground color brownish; dark-brown spots of varied sizes irregularly distributed. Fins light-brown with dark-brown spots. Maximum standard length. 125.0 mm. Distribution. Upper río Paraguay and rio Paraná basins. Remarks. Ossancora eigenmanni was identified as Oxydoras eigenmanni by Graça, Pavanelli (2007) . Birindelli, Sabaj-Pérez (2011), in the description of the new genus, Ossancora , proposed the new combination. Ossancora eigenmanni 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.