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 Aphyocharax 1. Fins, except pectoral and adipose, and ventral region of the body reddish; no humeral spot; 1 to 4 teeth in maxilla ............................................................................... A. anisitsi 1’. Just the caudal fin red; a black, diffuse, and oval, vertically elongated, humeral spot; 8 to 17 teeth in maxilla ................................................................................ 2 2. Orbital diameter contained less than 2.5 times in head length; short maxillary bone, its posterior tip not reaching the vertical through center of the eye......... Aphyocharax sp . 2’. Orbital diameter contained 3.5 to 4.5 times in head length; long maxillary bone, its posterior tip reaching the vertical through center of the eye........................ A. dentatus