oligacanthus, Myleus Müller [J.] & Troschel [F. H.] 1844:98 [Archiv für Naturgeschichte v. 10 (pt 1); ref. 3070] Suriname. Holotype (unique): ZMB 3635. Also appeared in Müller & Troschel 1845:24 [ref. 3071]. •Valid as Acnodon oligacanthus (Müller & Troschel 1844) -- (Géry 1972:197 [ref. 1594], Jégu & Santos 1990:189 [ref. 20145], Planquette et al. 1996:360 [ref. 22818], Jégu in Reis et al. 2003:183 [ref. 27061], Jégu et al. 2003:851 [ref. 27668], Melo et al. 2016:133 [ref. 34701], Borstein et al. 2022:16 [ref. 39507], Ota et al. 2024:404 [ref. 40817]). Current status: Valid as Acnodon oligacanthus (Müller & Troschel 1844). Serrasalmidae: Myleinae. Distribution: South America: French Guiana, Guyana, Brazil and Suriname. Habitat: freshwater.