| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Caspian Sea | Lake | native | 26334 |
| Don | River (basin) | native | 26334 |
| Kuma River | River (basin) | native | 1441 |
| Palearctic | Zoogeographic realm | endemic | 26334 |
| Samur River | River (basin) | native | 59043 |
| Sulak River | River (basin) | native | 1441 |
| Terek River | River (basin) | native | 59043 |