micropterus, Pimelodus Günther [A.] 1864:124 [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Río San Geronimo, Guatemala. Holotype (unique): BMNH 1864.1.26.92. Type catalog: Ferraris 2007:200 [ref. 29155]. •Valid as Rhamdia micropterus (Günther 1864) -- (Burgess 1989:279 [ref. 12860]). •Questionably a synonym of Rhamdia quelen (Quoy & Gaimard 1824) -- (Silfvergrip 1996:95 [ref. 22347], Bockmann & Guazzelli in Reis et al. 2003:424 [ref. 27061], Ferraris 2007:200 [ref. 29155]). •Probably a synonym of Rhamdia guatemalensis (Günther 1864). Current status: Synonym of Rhamdia guatemalensis (Günther 1864). Heptapteridae: Rhamdiinae. Habitat: freshwater.