Pygocentrus Müller [J.] & Troschel [F. H.] 1844:94 Masc. Serrasalmus piraya Cuvier 1819. Type by subsequent designation. Type designated by Eigenmann 1910:442 [ref. 1224]. •Synonym of Serrasalmus Lacepède 1803, but a valid subgenus Pygocentrus -- (Géry 1976:52 [ref. 14199], Géry 1977:290 [ref. 1597]). •Valid as Pygocentrus Müller & Troschel 1844 -- (Taphorn 1992:308 [ref. 23654], Fink 1993 [ref. 20937], Machado-Allison & Fink 1991:109 [ref. 22050], Fink & Zelditch 1997:179 [ref. 22686], Britski et al. 1999:62 [ref. 24147], Machado-Allison 2002:55 [ref. 27640], Jégu in Reis et al. 2003:189 [ref. 27061], Freeman et al. 2007:1 et seq. [ref. 29167], Mirande 2009:6 [ref. 30267] in Serrasalmidae, Mirande 2010:471 [ref. 31006], Hubert & Renno 2010:33 [ref. 31099], Oliveira et al. 2011:11 [ref. 31685], Bertaco et al. 2016:415 [ref. 34561]). Current status: Valid as Pygocentrus Müller & Troschel 1844. Serrasalmidae: Serrasalminae.