rhombeus, Salmo Linnaeus [C.] 1766:514 [Systema naturae sive regna tria naturae v. 1 (pt 1); ref. 2786] Brokopondo, Suriname River, Suriname. Neotype: RMNH 26192. Neotype designated by Géry 1972:229 [ref. 1594]. •Valid as Serrasalmus rhombeus (Linnaeus 1766) -- (Géry 1972:227 [ref. 1594], Ortega & Vari 1986:9 [ref. 9708], Taphorn 1992:340 [ref. 23654], Planquette et al. 1996:378 [ref. 22818], Fuller et al. 1999:190 [ref. 25838], Merckx et al. 2000:185 [ref. 24718], Nakayama et al. 2001:866 [ref. 25476], Lasso et al. 2001:96 [ref. 25928], Machado-Allison 2002:69 [ref. 27640], Jégu in Reis et al. 2003:192 [ref. 27061], López et al. 2003:32 [ref. 27366], Menni 2004:78 [ref. 28131], Machado-Allison et al. 2009:128 [ref. 30953], Hubert & Renno 2010:58 [ref. 31099], Barriga Salazar 2014:109 [ref. 35745], Ramos et al. 2014:4 [ref. 35321], Sarmiento et al. 2014:93, 187 [ref. 35004], Azpelicueta & Koerber 2015:45 [ref. 33654], Melo et al. 2016:374 [ref. 35317], Nión et al. 2016:28 [ref. 35565] with author without parentheses, DoNascimiento et al. 2017:38 [ref. 35633], Urbano-Bonilla et al. 2018:84 [ref. 35773], Careaga et al. 2020:76 [ref. 37774], Silvano et al. 2020:190 [ref. 38133], Meza-Vargas et al. 2021:17 [ref. 39298], Borstein et al. 2022:16 [ref. 39507], Koerber et al. 2022:19 [ref. 39235], Gallo-Cardozo et al. 2023:[5] [ref. 40628], Vieira et al. 2023:18 [ref. 40759], Ota et al. 2024:427 [ref. 40817], Gallo-Cardozo et al. 2024:18 [ref. 40973]). Current status: Valid as Serrasalmus rhombeus (Linnaeus 1766). Serrasalmidae: Serrasalminae. Distribution: South America: Amazon and Orinoco River basins, northern and eastern Guiana Shield, and northeastern Brazilian coastal rivers (Argentina, Uruguay, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela) [but not Argentina on ref. 33654]. Habitat: freshwater.