Piaractus Eigenmann [C. H.] 1903:148 Masc. Myletes brachypomus Cuvier 1818. Type by original designation (also monotypic). Misspelled Piarctus by Eigenmann & Allen 1942:247 [ref. 1246]. •Synonym of Colossoma Eigenmann & Kennedy 1903, but a valid subgenus Piaractus -- (Géry 1976:50 [ref. 14199], Géry 1977:255 [ref. 1597]). •Valid as Piaractus Eigenmann 1903 -- (Géry 1986:97 [ref. 6012], Géry et al. 1987:441 [ref. 6001], Machado-Allison 1986:1 [ref. 12757], Taphorn 1992:298 [ref. 23654], Britski et al. 1999:62 [ref. 24147], Jégu in Reis et al. 2003:187 [ref. 27061], Mirande 2009:6 [ref. 30267] in Serrasalmidae, Mirande 2010:471 [ref. 31006], Oliveira et al. 2011:11 [ref. 31685], Zhang et al. 2016:211 [ref. 34477], Esmaeili et al. 2018:54 [ref. 36089], Escobar L. et al. 2019:[1] [ref. 36745]). Current status: Valid as Piaractus Eigenmann 1903. Serrasalmidae: Colossomatinae.