micropterus, Cheirodon Eigenmann [C. H.] in Eigenmann & Ogle 1907:9 [Proceedings of the United States National Museum v. 33 (no. 1556); ref. 1266] Santarém, Pará, Brazil. Holotype (unique): CAS 59780 [ex IU 11092]. •Valid as Serrapinnus micropterus (Eigenmann 1907) -- (Malabarba 1998:215 [ref. 23844], Malabarba in Reis et al. 2003:219 [ref. 27061], Jerep & Malabarba 2014:307 [ref. 33376], Malabarba & Jerep 2014:58 [ref. 33440], Sarmiento et al. 2014:185 [ref. 35004], Jerep et al. 2016:291 [ref. 34362], Jerep et al. 2024:276 [ref. 40817]). Current status: Valid as Serrapinnus micropterus (Eigenmann 1907). Characidae: Cheirodontinae. Distribution: South America: Amazon River basin, Bolivia and Brazil. Habitat: freshwater.