langeanii, Hemiodus Beltrão [H.] & Zuanon [J.] 2012:256, Figs. 1a, 2 [Neotropical Ichthyology v. 10 (no. 2); ref. 32032] Rio Amana, igarapé Porquinho, 5°06'33.0'S, 57°32'08.0"W, Floresta Nacional do Amana reserve (FLONA do Amana), Itaituba, Para State Brazil. Holotype: INPA 31564. Paratypes: INPA 31562 (8 + 1 c&s), 31563 (6); MPMZUSP 109438 (2); MPEG 20035 (2). •Valid as Hemiodus langeanii Beltrão & Zuanon 2012. Current status: Valid as Hemiodus langeanii Beltrão & Zuanon 2012. Hemiodontidae. Distribution: Rio Amana, a tributary of rio Maués-Açú, rio Amazonas drainage, Brazil. Habitat: freshwater, brackish, marine.