ribeiroi, Cheirodon Eigenmann [C. H.] in Eigenmann & Ogle 1907:9 [Proceedings of the United States National Museum v. 33 (no. 1556); ref. 1266] Puerto Max, Río Paraguay. Holotype: CAS 59778 [ex IU 10229]. Additional material: CAS 59779 [ex IU 11263] (1) questionably included therefore not a type. See Malabarba 1998:231 [ref. 23844]. •Valid as Mixobrycon ribeiroi (Eigenmann 1907) -- (Malabarba in Reis et al. 2003:145 [ref. 27061], Reis et al. 2016:13 [ref. 34496], Koerber et al. 2017:42 [ref. 35267]). Current status: Valid as Mixobrycon ribeiroi (Eigenmann 1907). Characidae: Characids incertae sedis. Distribution: Paraguay River basin, Paraguay. Habitat: freshwater.