arua, Hemigrammus Lima [F. C. T.], Wosiacki [W. B.] & Ramos [C. S.] 2009:154, Figs. 1-4 [Neotropical Ichthyology v. 7 (no. 2); ref. 30248] Lago São Francisco do Alto Aruã, tributary of rio Arapiuns, tributary of rio Tapajós, 2°36.4'S, 55°54'21'W, município de Juruti, Pará State, Brazil. Holotype: MPEG 14755. Paratypes: (many) at ANSP, INPA, MPEG, MZUS. •Valid as Hemigrammus arua Lima, Wosiacki & Ramos 2009 -- (Carvalho et al. 2010:253 [ref. 30862]). Current status: Valid as Hemigrammus arua Lima, Wosiacki & Ramos 2009. Acestrorhamphidae: Pristellinae. Distribution: Lower Amazon River, Pará State, Brazil. Habitat: freshwater.