n = 4
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Cynodon gibbus | (Agassiz, 1829) | Cynodon gibbus | Cynodontidae | |
| Cynodon meionactis | Géry, Le Bail & Keith, 1999 | Cynodon meionactis | Cynodontidae | |
| Cynodon pectoralis | Günther, 1866 | Hydrolycus scomberoides | Cynodontidae | Payara |
| Cynodon septenarius | Toledo-Piza, 2000 | Cynodon septenarius | Cynodontidae |