Teleostei >
Cichliformes (Cichlids, convict blennies)
鱸形目 (Cichlids, convict blennies) >
Cichlidae (Cichlids)
麗魚科 (Cichlids) > Geophaginae
Etymology: Geophagus: Greek, gea = the earth + Greek, phagein = to eat (Ref. 45335); diamantinensis: The name diamantinensis refers to the Chapada Diamantina, a high plateau with predominance of Caatinga vegetation in northeastern Brazil, where the species is endemic (Ref. 118113).