agassizii, Vastres Valenciennes [A.] in Cuvier & Valenciennes 1847:456 [Histoire naturelle des poissons v. 19; ref. 4883] Brazil. No types known. •Synonym of Arapaima gigas (Schinz 1822) -- (Ferraris in Reis et al. 2003:31 [ref. 27061]). •Valid as Arapaima agassizii Valenciennes 1847 -- (Stewart 2013:38 [ref. 32556], Stewart 2013:471 [ref. 32923]). Current status: Valid as Arapaima agassizii (Valenciennes 1847). Arapaimidae. Distribution: Brazil (known from holotype). Habitat: freshwater.