serrulatus, Pygopristis Valenciennes [A.] in Cuvier & Valenciennes 1850:300 [Histoire naturelle des poissons v. 22; ref. 1014] Amazonas, Brazil. Holotype (unique): MNHN A-9898. Type catalog: Bertin 1948:25-26 [ref. 19577]. •Valid as Serrasalmus serrulatus (Valenciennes 1850) -- (Géry 1972:221 [ref. 1594], Ortega & Vari 1986:9 [ref. 9708], Jégu in Reis et al. 2003:192 [ref. 27061], López et al. 2003:32 [ref. 27366], Menni 2004:78 [ref. 28131], Azpelicueta & Koerber 2015:45 [ref. 33654], Silvano et al. 2020:191 [ref. 38133], Ota et al. 2024:428 [ref. 40817]). Current status: Valid as Serrasalmus serrulatus (Valenciennes 1850). Serrasalmidae: Serrasalminae. Distribution: South America: Amazon River basin and ?Essequibo River basin (Brazil, ?Guyana and Peru) (not Argentina on ref. 33654). Habitat: freshwater.