rhabdotus, Geophagus Hensel [R.] 1870:60 [Archiv für Naturgeschichte v. 36 (pt. 1); ref. 18277] Rio Cadeia, Rio Grande do Sul, Brazil. Lectotype: ZMB 7461. Paralectotypes: ZMB 7464 (2), 22704 (1). Type catalog: Paepke & Schindler 2013:269 [ref. 32895]. Lectotype selected by Gosse 1976:114 [ref. 7029]. •Valid as Gymnogeophagus rhabdotus (Hensel 1870) -- (Gosse 1976:110 [ref. 7029], Reis & Malabarba 1988:270 [ref. 6638], Malabarba 1989:168 [ref. 14217], Reis et al. 1992:266 [ref. 20011], Wimburger et al. 1998:510 [ref. 23857], Casciotta et al. 2000:53 [ref. 24908], Kullander in Reis et al. 2003:635 [ref. 27061], López et al. 2003:78 [ref. 27366], González-Bergonzoni et al. 2009:19 [ref. 30455], Litz & Koerber 2014:34 [ref. 33622], Malabarba et al. 2015:659 [ref. 34105], Loureiro et al. 2016:[8] [ref. 34384], Bertaco et al. 2016:426 [ref. 34561], Nión et al. 2016:50 [ref. 35565], Casciotta et al. 2017:20 [ref. 35727], Loureiro et al. 2023:155 [ref. 40506]). Current status: Valid as Gymnogeophagus rhabdotus (Hensel 1870). Cichlidae: Cichlinae. Distribution: South America: Uruguay River drainage and Laguna dos Patos basin (Brazil and Uruguay). Habitat: freshwater.