Serrasalmus, Lacepede, 1803

Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da & Pavanelli, Carla Simone, 2018, Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated, Neotropical Ichthyology 16 (2), pp. 1-111 : 53

Serrasalmus

1. Caudal-fin margin hyaline, preceded by a black transverse bar; dorsal profile of the head little concave..... ........................................................................... S. maculatus

1’. Caudal-fin margin black in variable length, sometimes extending up to the base of caudal fin; dorsal profile of the head very concave........................................... S. marginatus