demararae, Callichthys callichthys Hoedeman [J. J.] 1952:10 [Beaufortia v. 1 (no. 12); ref. 12773] Demarara, Guyana. Holotype: ZMA 100304. Type catalog: Nijssen et al. 1982:40 [ref. 19236], Ferraris 2007:111 [ref. 29155]. Based also on specimens described by Eigenmann 1912 (not investigated for type status). •Synonym of Callichthys callichthys (Linnaeus 1758), but a valid subspecies as described -- (Burgess 1989:364 [ref. 12860]). •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.