chacoensis, Acharnes Holmberg [E. L.] 1891:182 [Revista Argentina de Historia Natural (Buenos Aires) v. 1; ref. 2192] Formosa, Chaco, Argentina. No types known. Original as Chacoënsis. •Synonym of Crenicichla semifasciata (Heckel 1840) -- (Ploeg 1991:107 [ref. 20196] with question, Kullander in Reis et al. 2003:631 [ref. 27061] with question, Kullander & Lucena 2013:150 [ref. 32675] with question, Mirande & Koerber 2015:58 [ref. 35117], Koerber et al. 2017:79 [ref. 35267], Hablützel & Huanto 2020:54 [ref. 37939], Varella et al. 2023:4 [ref. 40273]). Current status: Synonym of Crenicichla semifasciata (Heckel 1840). Cichlidae: Cichlinae. Habitat: freshwater.