gymnodontus, Psalidodon Eigenmann [C. H.] 1911:166, Pl. 4 (figs. 2-3) [Annals of the Carnegie Museum v. 8 (no. 1) (art. 3); ref. 1226] Rio Iguaçu at Porto União, Brazil. Holotype: FMNH 54574 [ex CM 3204]. Paratypes: CAS 22779 [ex IU 13304] (1), FMNH 71559 (1). Type catalog: Henn 1928:67 [ref. 12305], Ibarra & Stewart 1987:70 [ref. 12367]. •Valid as Astyanax gymnodontus (Eigenmann 1911) -- (Pavanelli & Oliveira 2009:569, 573 [ref. 30986]). •Valid as Psalidodon gymnodontus Eigenmann 1911 -- (López et al. 2002:59 [ref. 26808], Pavanelli in Reis et al. 2003:154 [ref. 27061], Reis et al. 2020:460 [ref. 38364], Terán et al. 2020:10 [ref. 37440], Zanata et al. 2024:261 [ref. 40718]). Current status: Valid as Psalidodon gymnodontus Eigenmann 1911. Acestrorhamphidae: Acestrorhamphinae. Distribution: South America: Iguaçu River basin (Brazil). Habitat: freshwater.