geryi, Roeboexodon Myers [G. S.] 1960:209 [Stanford Ichthyological Bulletin v. 7 (no. 4); ref. 3129] Maroni Basin, French Guiana. Holotype: MNHN 1958-0038. Paratypes: Géry priv. coll. (6). Based on Exodon guyanensis of Géry 1959 [ref. 1579] (not of Puyo). Géry 1959:347 [ref. 1579] named a neotype for Puyo's Exodon guyanensis, and that is the holotype of Roeboexodon geryi Myers 1960; guyanensis and Myer's geryi are automatically the same species; a species that might diiffer from Puyo's original species (see also Art. 75.6 of the Code). See comments in Lucena & Lucinda in Reis et al. 2003:155-156 [ref. 27061] and Moreira & Lima 2011:315 [ref. 31389]. •Valid as Roeboexodon geryi Myers 1960 -- (Lucena & Lucinda in Reis et al. 2003:155-156 [ref. 27061], Lucena & Lucinda 2004:73 [ref. 27957], Mirande 2010:491 [ref. 31006]). •Synonym of Roeboexodon guyanensis (Puyo 1948) -- (Moreira & Lima 2011:313 [ref. 31389], Mol et al. 2012:287 [ref. 32867], Lucena & Santos 2024:269 [ref. 40817]). Current status: Synonym of Roeboexodon guyanensis (Puyo 1948). Characidae: Exodontinae. Habitat: freshwater.