gibbosus, Tetragonopterus Steindachner [F.] 1877:562 [4], Pl. 1 (fig. 1) [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 74 (1. Abth.); ref. 4224] Rio Parahyba [Paranaiba], Brazil. Syntypes: (several) NMW 57518-19 (2, 1). On p. 4 of separate. •Species inquirenda in Characidae -- (Reis et al. 2003:159 [ref. 27061]). •Synonym of Tetragonopterus chalceus Spix & Agassiz 1829 -- (Zarske & Géry 2006:8 [ref. 29010] with author as Agassiz, Silva et al. 2016:15 [ref. 34929]). Current status: Synonym of Tetragonopterus chalceus Spix & Agassiz 1829. Characidae: Tetragonopterinae. Habitat: freshwater.