| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Cuanza | River (basin) | native | 11970 |
| Ethiopian | Zoogeographic realm | endemic | 2801 |
| Kouilou-Niari | River (basin) | native | 81639 |
| Loémé | River (basin) | native | 81639 |
| Mbini | River (basin) | native | 81639 |
| Mungo | River (basin) | native | 81639 |
| Ntem | River (basin) | native | 81639 |
| Ogowe | River (basin) | native | 81639 |
| Sanaga | River (basin) | native | 81639 |