Original description as Geophagus pellegrini:
- Regan, Charles Tate. 1912. "Descriptions of new cichlid fishes from South America in the British Museum". Annals and Magazine of Natural History. (Ser. 8), v. 9: pp. 505-507 (crc00329)
Conservation: Geophagus pellegrini is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (DD) data deficient (2016).