| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Cross | River (basin) | native | 57397 |
| Ethiopian | Zoogeographic realm | endemic | 28663 |
| Komo | River (basin) | native | 81649 |
| Lokoundje | River (basin) | native | 81649 |
| Lower Niger | River (basin) | native | 57397 |
| Niger | River (basin) | native | 57397 |
| Niger Delta | River (basin) | native | 57397 |
| Ogowe | River (basin) | native | 81649 |
| Ogun | River (basin) | native | 57397 |
| Osse | River (basin) | native | 57397 |
| Ouémé | River (basin) | native | 57397 |
| Rio del Rey | River (basin) | native | 81649 |
| Sanaga | River (basin) | native | 81649 |
| Wouri | River (basin) | native | 81649 |