argenteus, Oligosarcus Günther [A.] 1864:353 [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Brazil. Syntypes: BMNH 1967.1.24.1-2 (2). •Valid as Oligosarcus argenteus Günther 1864 -- (Menezes & Géry 1983:589 [ref. 8307], Menezes 1987:22 [ref. 20060], Menezes in Reis et al. 2003:151 [ref. 27061], Ribeiro et al. 2007:52 [ref. 29321], Ribeiro & Menezes 2015:77 [ref. 33768], Azevedo-Santos et al. 2019:5 [ref. 36506], Wendt et al. 2019:5 [ref. 36952], Menezes & Camelier 2024:243 [ref. 40817], Vieira-Guimarães et al. 2024:39 [ref. 41258]). Current status: Valid as Oligosarcus argenteus Günther 1864. Acestrorhamphidae: Acestrorhamphinae. Distribution: South America: Doce, Das Velhas and upper Paraná River basins, Brazil. Habitat: freshwater.