| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Benue | River (basin) | native | 81279 |
| Ethiopian | Zoogeographic realm | endemic | 2880 |
| Niger | River (basin) | native | 81279 |
| Ogun | River (basin) | native | 81279 |
| Pra | River (basin) | native | 81279 |
| Sanaga | River (basin) | native | 51193 |
| Volta | River (basin) | native | 30488 |