arapaima, Vastres Valenciennes [A.] In Cuvier & Valenciennes 1847:461 [Histoire naturelle des poissons v. 19; ref. 4883] Rupununi River, British Guiana, South America. Syntypes: BMNH 2009.1.19.1 (1, dried and stuffed) Based on the description of Sudis gigas in Schomburgk 1841:198, Pl. 11 [ref. 18707]. •Synonym of Arapaima gigas (Schinz 1822) -- (Ferraris in Reis et al. 2003:31 [ref. 27061]). •Valid as Arapaima arapaima (Valenciennes 1847) -- (Stewart 2013:38 [ref. 32556] dated 1947, Stewart 2013:471 [ref. 32923], Kottelat 2013:31 [ref. 32989]). Current status: Valid as Arapaima arapaima (Valenciennes 1847). Arapaimidae. Distribution: South America: Rupununi River basin, Guyana. Habitat: freshwater.