rufomarginatus, Geophagus Mattos [J. L. O.] & Costa [W. J. E. M.] 2018:328, Fig. 2 [Zoosystematics and Evolution v. 94 (no. 2); ref. 36009] Small stream crossing the road BA-001, Rio Buranhém basin, Porto Seguro municipality, Bahia State, Brazil, 16°26'17"S, 39°10'47"W, elevation about 10 meters. Holotype: UFRJ 9994. Paratypes: CICCAA, UFRJ. •Valid as 'Geophagus' rufomarginatus Mattos & Costa 2018 -- (Argolo et al. 2020:4 [ref. 37561], Silva et al. 2020:15 [ref. 37809], Vieira-Guimarães et al. 2024:53 [ref. 41258]). Current status: Valid as Geophagus rufomarginatus Mattos & Costa 2018. Cichlidae: Cichlinae. Distribution: South America: middle and lower Rio Buranhém basin and coastal drainages (eastern Brazil). Habitat: freshwater.