| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Australian | Zoogeographic realm | introduced | 13235 |
| Casamance | River (basin) | native | 13331 |
| Corubal | River (basin) | native | 13331 |
| Ethiopian | Zoogeographic realm | endemic | 4999 |
| Gambia | River (basin) | native | 28587 |
| Great Scarcies | River (basin) | native | 13331 |
| Kogon | River (basin) | native | 13331 |
| Konkouré | River (basin) | native | 13331 |
| Little Scarcies | River (basin) | native | 13331 |
| Lofa | River (basin) | native | 13331 |
| Rokel | River (basin) | native | 13331 |
| Saint John | River (basin) | native | 53405 |
| Saint Paul | River (basin) | native | 13331 |
| Sewa | River (basin) | native | 13331 |