gaucho, Crenicichla Lucena [C. A. S. de] & Kullander [S. O.] 1992:137, Figs. 29-30 [Ichthyological Exploration of Freshwaters v. 3 (no. 2); ref. 20004] Arroio Passo do Alto, near Mineral, município of São Nicolau, Rio Grande do Sul State, Brazil. Holotype: MCP 14328. Paratypes: MCP 12544 (1), 12720-21 (104, 4), 13042 (1), 13053 (1), 13158 (2), 13162 (1), 13181 (1), 13261 (1), 13551 (1); NRM 14720-21 (6, 4). •Valid as Crenicichla gaucho Lucena & Kullander 1992 -- (Kullander in Reis et al. 2003:627 [ref. 27061], López et al. 2003:76 [ref. 27366], Menni 2004:87 [ref. 28131], Casciotta et al. 2006:107 [ref. 28986], Casciotta & Almirón 2009:656 [ref. 30041], Piálek et al. 2010:34 [ref. 30903], Mirande & Koerber 2015:57 [ref. 35117], Bertaco et al. 2016:425 [ref. 34561], Varella et al. 2023:2 [ref. 40273]). Current status: Valid as Crenicichla gaucho Lucena & Kullander 1992. Cichlidae: Cichlinae. Distribution: South America: middle Uruguay River drainage, Argentina and Brazil. Habitat: freshwater.