n = 3
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Petitella bleheri | (Géry & Mahnert, 1986) | Petitella bleheri | Characidae | Firehead tetra |
| Petitella georgiae | Géry & Boutière, 1964 | Petitella georgiae | Characidae | False rummynose tetra |
| Petitella rhodostoma | (Ahl, 1924) | Petitella rhodostoma | Characidae | Rummy-nose tetra |