labiatus, Geophagus Hensel [R.] 1870:64 [Archiv für Naturgeschichte v. 36 (pt. 1); ref. 18277] Rio Santa Maria, Taquara, Rio Grande do Sul, Brazil. Holotype (unique): ZMB 7467. Type catalog: Paepke & Schindler 2013:268 [ref. 32895]. •Valid as Geophagus labiatus Hensel 1870 -- (Reis & Malabarba 1988:280 [ref. 6638]). •Synonym of Gymnogeophagus gymnogenys (Hensel 1870) -- (Gosse 1976:118 [ref. 7029], Malabarba 1989:168 [ref. 14217]). •Valid as Gymnogeophagus labiatus (Hensel 1870) -- (Reis & Malabarba 1988:280 [ref. 6638], Casciotta et al. 2000:53 [ref. 24908], Kullander in Reis et al. 2003:635 [ref. 27061], Staeck 2006:104 [ref. 29421], González-Bergonzoni et al. 2009:23 [ref. 30455], Litz & Koerber 2014:34 [ref. 33622], Malabarba et al. 2015:659 [ref. 34105], Bertaco et al. 2016:426 [ref. 34561], Nión et al. 2016:50 [ref. 35565], Casciotta et al. 2017:20 [ref. 35727], Alonso et al. 2019:S1 [ref. 36529], Figueiredo et al. 2021:6 [ref. 38935], Loureiro et al. 2023:152 [ref. 40506]). Current status: Valid as Gymnogeophagus labiatus (Hensel 1870). Cichlidae: Cichlinae. Distribution: South America: Laguna dos Patos and Lagoa Mirim drainages (Brazil and Uruguay). Habitat: freshwater.