nattereri, Brycon Günther [A.] (ex Kner) 1864:334 [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Irisanga, Brazil [= Brazil, São Paulo, Oriçanga (now Estiva Gerbi, 22°16'S, 46°57'W), rio Grande basin on ref. 35071]. Holotype (unique): NMW 16396. Based on Chalceus opalinus of Kner 1860:10 [ref. 7130]. •Valid as Brycon nattereri Günther 1864 -- (Howes 1982:36 [ref. 14201], Géry & Mahnert 1992:814 [ref. 27146], Lima in Reis et al. 2003:177 [ref. 27061], Lima 2004:286 [ref. 27858], Lima 2017:75 [ref. 35071], Koerber et al. 2017:27 [ref. 35267] needs verification for Paraguay, Reis et al. 2020:457 [ref. 38364]). Current status: Valid as Brycon nattereri Günther 1864. Bryconidae: Bryconinae. Distribution: South America: upper Paraná, upper Tocantins and upper São Francisco River basins (Brazil). Habitat: freshwater.