n = 5
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Alfaro acutiventralis | Meek, 1912 | Alfaro cultratus | Poeciliidae | Knife livebearer |
| Alfaro amazonum | (Regan, 1911) | Alfaro cultratus | Poeciliidae | Knife livebearer |
| Alfaro cultratus | (Regan, 1908) | Alfaro cultratus | Poeciliidae | Knife livebearer |
| Alfaro hubberi | (Fowler, 1923) | Alfaro huberi | Poeciliidae | Hubers knife livebearer |
| Alfaro huberi | (Fowler, 1923) | Alfaro huberi | Poeciliidae | Hubers knife livebearer |