tenuis, Bryconamericus Bizerril [C. R. S. F.] & Auraújo [R. M. C.] 1992:65, Fig. 1 [Revue française d'Aquariologie Herpétologie v. 19 (no. 3); ref. 20971] Rio São Joao, Ville de Silva Jardim, Rio de Janeiro, Brazil. Holotype: MNRJ 12230. Paratypes: MNRJ 12231 (26). •Valid as Bryconamericus tenuis Bizerril & Auraújo 1992 -- (Román-Valencia 2003:25 [ref. 26840], Silva in Reis et al. 2003:118 [ref. 27061], da Silva 2004:55 [ref. 27870], Langeani et al. 2005:389 [ref. 28234], Dagosta & Netto-Ferreira 2015:435 [ref. 33665], Thomaz et al. 2015:Add. 5 [ref. 33893], Hirschmann & Malabarba 2024:122 [ref. 40817] with correct second author). Current status: Valid as Bryconamericus tenuis Bizerril & Auraújo 1992. Characidae: Stevardiinae. Distribution: South America: São João River basin in Rio de Janeiro State, Brazil. Habitat: freshwater.