n = 9
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Eurycheilichthys apocremnus | Reis, 2017 | Genus Species | New species | |
| Eurycheilichthys castaneus | Reis, 2017 | Genus Species | New species | |
| Eurycheilichthys coryphaenus | Reis, 2017 | Genus Species | New species | |
| Eurycheilichthys limulus | Reis & Schaefer, 1998 | Eurycheilichthys limulus | Loricariidae | |
| Eurycheilichthys luisae | Reis, 2017 | Genus Species | New species | |
| Eurycheilichthys pantherinus | (Reis & Schaefer, 1992) | Eurycheilichthys pantherinus | Loricariidae | |
| Eurycheilichthys paucidens | Reis, 2017 | Genus Species | New species | |
| Eurycheilichthys planus | Reis, 2017 | Genus Species | New species | |
| Eurycheilichthys vacariensis | Reis, 2017 | Genus Species | New species |