sveni, Geophagus Lucinda [P. H. F.], Lucena [C. A. S. de] & Assis [N. C.] 2010:30, Figs. 1-4 [Zootaxa No. 2429; ref. 30771] Lajeado Hydroelectric Reservoir, Porto Nacional, Tocantins, Rio Tocantins, Brazil, 10°41'36"S, 48°24'52"W. Holotype: MCP 43666. Paratypes: MCP 43667 (2, 1 c&s); MCP 43669 (6); UNT 8247 (6, 1 c&s), 8726 (7). Plus non-type specimens. •Valid as Geophagus sveni Lucinda, Lucena & Assis 2010 -- (Deprá et al. 2014:745 [ref. 33631], Benitez et al. 2018:1056 [ref. 36343], Koerber et al. 2019:11 [ref. 36736], Mirande & Koerber 2020:2 [ref. 37594], Reis et al. 2020:472 [ref. 38364], Ximenes et al. 2021:4 [ref. 38836], Chuctaya et al. 2022:14 [ref. 39723], Koerber et al. 2023:7 [ref. 40665]). Current status: Valid as Geophagus sveni Lucinda, Lucena & Assis 2010. Cichlidae: Cichlinae. Distribution: South America: middle portions of Rio Tocantins drainage (Brazil) and Paraná River basin (Argentina). Habitat: freshwater.