brachybranchus, Geophagus Kullander [S. O.] & Nijssen [H.] 1989:48, Figs. 26-28 [The cichlids of Surinam; ref. 14136] Above Blanche Marie Valen, Nickerie District, Suriname. Holotype: RMNH 30974. Paratypes: NRM 37079 (1, c&s), 43060-61 (3, 1); RMNH 30975-76 (2, 2), 30972-73 (7, 10); USNM 225837-39 (19, 1, 2), 226046-47 (2, 22), 226211 (73), 289513 (2); ZMA 106193 (19). •Valid as Geophagus brachybranchus Kullander & Nijssen -- (Kullander in Reis et al. 2003:632 [ref. 27061], López-Fernández & Taphorn 2004:23 [ref. 27573], Staeck & Schindler 2006:74 [ref. 28755], Hauser & López-Fernández 2013:279 [ref. 32965], Taphorn et al. 2022:33 [ref. 41297] as cf. brachybranchus). Current status: Valid as Geophagus brachybranchus Kullander & Nijssen 1989. Cichlidae: Cichlinae. Distribution: South America: Corantijn and Nickerie River drainages, and probably in Essequibo River basin (Guyana and Suriname). Habitat: freshwater.