spilurus, Tetragonopterus Valenciennes [A.] in Cuvier & Valenciennes 1850:156 [Histoire naturelle des poissons v. 22; ref. 1014] Suriname. Syntypes: MNHN 0000-5341 [ex RMNH] (2). Type catalog: Bertin 1948:22 [ref. 19577]. •Valid as Ctenobrycon spilurus (Valenciennes 1850) -- (Planquette et al. 1996:272 [ref. 22818], Lasso et al. 2001:95 [ref. 25928], Benine & Cassati in Reis et al. 2003:126 [ref. 27061], Benine et al. 2010:59 [ref. 31067], Sarmiento et al. 2014:184 [ref. 35004], DoNascimiento et al. 2017:61 [ref. 35633], Urbano-Bonilla et al. 2018:88 [ref. 35773], Careaga et al. 2020:75 [ref. 37774], Koerber et al. 2022:37 [ref. 39235], Taphorn et al. 2022:14 [ref. 41297], Cortés Hernández et al. 2023:455 [ref. 40760], Vieira et al. 2023:17 [ref. 40759] as cf. spilurus, Benine 2024:144 [ref. 40817]). Current status: Valid as Ctenobrycon spilurus (Valenciennes 1850). Acestrorhamphidae: Acestrorhamphinae. Distribution: South America: Orinoco River basin and coastal river basins of northern South America (French Guiana, Guyana, Suriname, Venezuela, Brazil, Colombia, Peru and Bolivia). Habitat: freshwater.