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 1. Body very elongate; adipose-fin base very long, extending to caudal fin, its length about half the stardard length, several times longer than anal-fin base; head depressed .............................................................. I. borodini 1’. Body not elongate; adipose-fin base short, not extending to caudal fin, its length contained several times in stardard length, about the same as that of anal-fin base; head not depressed .............................................................. 2 2. Dark-brown inconspicuous longitudinal band along flank; first dorsal-fin ray approximately the same size as the second................................................................. I. mirini 2’. Dark-brown conspicuous longitudinal band along flank; first dorsal-fin ray shorter than the second............... ............................................................................. I. schubarti