Original description as Crenicichla tuca:
- Piálek, Lubomír & K. Dragová, J. Casciotta, A. Almirón & O. Říčan. 2015. "Description of two new species of Crenicichla (Teleostei: Cichlidae) from the lower Iguazú River with a taxonomic reappraisal of C. iguassuensis, C. tesay and C. yaha". Historia Natural. v. 5(n. 2), pp. 5-27 (crc06900) (abstract)
Conservation: Crenicichla tuca is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species. Hydroelectric dams and deforestation threaten the habitat of this species.