Considered a synonym of Chuco intermedium (Günther, 1862)
- Allgayer, Robert. 1989. "Révision et redescription du genre Theraps Günther 1862. Description de deux espèces nouvelles du Mexique (Pisces, Perciformes, Cichlidae)". Revue Française des Cichlidophiles. 4-30 (ffm00144)
Original description as Heros angulifer:
- Günther, Albert C. L. G. 1862. "Catalogue of the fishes in the British Museum. Catalogue of the Acanthopterygii, Pharyngognathi and Anacanthini in the collection of the British Museum". Catalogue of the fishes in the British Museum. 4; i-xxi + 1-534 (ffm00035)