bidens, Myletes Spix [J. B. von] & Agassiz [L.] 1829:75, Pl. 32 [Selecta genera et species piscium quos in itinere per Brasiliam; ref. 13] Rivers of equatorial Brazil [= lower Amazon basin]. Lectotype: MNHN 0000-789. Paralectotype: (1). Type catalog: Kottelat 1984:146 [ref. 21784]. Lectotype selected by Géry 1986:98 [ref. 6012]. •Synonym of Piaractus brachypomus (Cuvier 1818) -- (Taphorn 1992:298 [ref. 23654], Fuller et al. 1999:187 [ref. 25838], Jégu in Reis et al. 2003:187 [ref. 27061], Ota et al. 2024:418 [ref. 40817]). Current status: Synonym of Piaractus brachypomus (Cuvier 1818). Serrasalmidae: Colossomatinae. Habitat: freshwater.