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 Imparfinis borodini Mees, Cala, 1989 Fig. 21 Body elongated; greatest body depth contained 8.0, head depth 10.1 and caudal peduncle depth 14.4 times in SL; head length 4.0, anal-fin base length 8.8, adipose-fin base length 2.9 and maxillary-barbel length 4.8 times in SL; snout length 3.0, horizontal orbital diameter 5.7 and least interorbital width 4.5 times in HL. Mouth terminal; premaxilla and dentary with several diminute teeth. Dorsal fin with 7, pectoral fin with 8, pelvic fin with 6 and anal fin with 8 rays. Ground color pale brown; dark-brown transverse bars on dorsum; dark-brown inconspicuous longitudinal stripe along lateral line. Maximum standard length. 105.0 mm. Biological data. Lives in streams with sand, silt and pebbles ( Sarmento-Soares et al ., 2016 ). Distribution. Upper rio Paraná , rio São Francisco and rio Tocantins basins.