paradoxus, Exodon Müller [J.] & Troschel [F. H.] 1844:91 [Archiv für Naturgeschichte v. 10 (pt 1); ref. 3070] Essequibo River, Guyana. Syntypes: ZMB 3609 (2). Also appeared as new in Müller & Troschel 1845:31, Pl. 4 (fig. 1) [ref. 3071]. •Valid as Exodon paradoxus Müller & Troschel 1844 -- (Lucena in Reis et al. 2003:127-128 [ref. 27061], Mirande 2010:492 [ref. 31006], DoNascimiento et al. 2017:47 [ref. 35633], Urbano-Bonilla et al. 2018:88 [ref. 35773]). Current status: Valid as Exodon paradoxus Müller & Troschel 1844. Characidae: Exodontinae. Distribution: Brazil, Colombia and Guyana. Habitat: freshwater.