arekaima, Pimelodus Jardine [W.] in Schomburgk 1841:178, Pl. 5 [The Natural history of fishes of Guiana; ref. 18707] Upper Essequibo River and Río Branco. No types known. Type catalog: Ferraris 2007:334 [ref. 29155]. •Valid as Rhamdia arekaima (Jardine 1841) -- (Burgess 1989:278 [ref. 12860]). •Species inquirenda in Leiarius, family Pimelodidae -- (Lundberg & Littmann in Reis et al. 2003:437 [ref. 27061], Ferraris 2007:334 [ref. 29155]). Pimelodidae. Distribution: Guyana and Brazil. Habitat: freshwater.