| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Benue | River (basin) | native | 86396 |
| Cross | River (basin) | native | 81638 |
| Ethiopian | Zoogeographic realm | endemic | 2936 |
| Niger | River (basin) | native | 86396 |
| Ogun | River (basin) | native | 86396 |
| Ouémé | River (basin) | native | 86396 |
| Wouri | River (basin) | questionable | 2936 |