| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Bayou Pierre River | River (basin) | native | 86798 |
| Big Black River | River (basin) | native | 86798 |
| Lake Pontchartrain | Lake | native | 86798 |
| Mississippi River | River (basin) | native | 86798 |
| Nearctic | Zoogeographic realm | endemic | 5723 |
| Yazoo River | River (basin) | native | 86798 |