pirarucu, Sudis Spix [J. B. von] & Agassiz [L.] 1829:31, Pl. 6 [Selecta genera et species piscium quos in itinere per Brasiliam; ref. 13] Not available, first published in the synonymy of Sudis gigas Cuvier; from Brazil. Name first mentioned in Cuvier 1829 [ref. 995] as name only. •In the synonymy of Arapaima gigas (Schinz 1822) -- (Ferraris in Reis et al. 2003:31 [ref. 27061]). Nomen Nudum. Current status: Synonym of Arapaima gigas (Schinz 1822). Arapaimidae.