schomburgkii, Tetragonopterus Valenciennes [A.] in Cuvier & Valenciennes 1850:137 [Histoire naturelle des poissons v. 22; ref. 1014] Essequibo River, Guyana. Holotype (unique): MNHN A-9812 (poor condition). Type catalog: Bertin 1948:16-17 [ref. 19577]. Apparently described independently from (and a junior homonym of) Tetragonopterus schomburgkii Jardine 1841. •Species inquirenda in Characidae -- (Reis et al. 2003:160 [ref. 27061], Toledo-Piza et al. 2024:288 [ref. 40817]). 1°Homonym. Characidae. Habitat: freshwater.