n = 6
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Retroculus acherontos | Landim, Moreira & Figueiredo, 2015 | Genus Species | New species | |
| Retroculus boulengeri | Eigenmann & Bray, 1894 | Retroculus lapidifer | Cichlidae | |
| Retroculus lapidifer | (Castelnau, 1855) | Retroculus lapidifer | Cichlidae | |
| Retroculus lapidifera | (Castelnau, 1855) | Retroculus lapidifer | Cichlidae | |
| Retroculus septentrionalis | Gosse, 1971 | Retroculus septentrionalis | Cichlidae | |
| Retroculus xinguensis | Gosse, 1971 | Retroculus xinguensis | Cichlidae |