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 Brachyhypopomus gauderio Giora, Malabarba, 2009 Fig. 17 Body elongated and compressed; greatest depth contained 5.8 to 8.1 times in TL; head length 7.6 to 8.6, anal-fin base length 1.2 to 1.4, caudal-peduncle length 2.0 to 3.1, preanal distance 3.9 to 5.0 and prepectoral distance 7.0 to 7.9 in LEA; snout length 2.4 to 4.3, horizontal orbital diameter 8.2 to 11.1 and least interorbital width 3.3 to 4.8 in HL. Mouth terminal. Pectoral fin with 14-17 rays and anal fin with 179- 226 rays; transverse series above lateral line with 7-8 scale rows ( Graça, Pavanelli, 2007 ; Giora, Malabarba, 2009 ). Ground color yellowish to pale brown; dorsal region and lower-half of body with dark-brown transverse and irregular bars; anal fin hyaline, with dark-brown spots. Maximum total length. 160.0 mm. Distribution. Río de basin, Laguna dos Patos and rio Tramandaí drainages. Remarks. Brachyhypopomus gauderio was identified as B. cf. pinnicaudatus by Graça, Pavanelli (2007) . Giora, Malabarba (2009) described the new species from the Laguna dos Patos and rio Tramandaí drainages, río Paraguay and río Uruguay basins. Brachyhypopomus gauderio is a non-native species from the upper rio Paraná, and its occurrence in the region can be associated with its introduction as a live bait by anglers.