caliurus, Charax Eigenmann [C. H.] & Kennedy [C. H.] in Eigenmann, McAtee & Ward 1907:142, Pl. 43 (fig. 1) [Annals of the Carnegie Museum v. 4 (no. 2) (art. 7); ref. 1261] Laguna Pasito, Paraguay. Holotype (unique): CAS 15682 [ex IU 9969]. •Valid as Cynopotamus caliurus (Eigenmann & Kennedy 1907) -- (Menezes 1976:25 [ref. 7073], Menni 2004:74 [ref. 28131]). •Synonym of Cynopotamus argenteus (Valenciennes 1837) -- (Menezes 1987:7 [ref. 8072], Braga 1994:12 [ref. 27878] as calliurus, Britski et al. 1999:52 [ref. 24147], Lucena & Menezes in Reis et al. 2003:202 [ref. 27061], Litz & Koerber 2014:11 [ref. 33622], Mirande & Koerber 2015:18 [ref. 35117], Koerber et al. 2017:28 [ref. 35267]). Current status: Synonym of Cynopotamus argenteus (Valenciennes 1837). Characidae: Characinae. Habitat: freshwater.