| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Amudar'ya | River (basin) | native | 39701 |
| Aral Sea | Sea/Bay/Gulf | native | 59043 |
| Caspian Sea | Lake | native | 39702 |
| Danube | River (basin) | native | 1441 |
| Kuban River | River (basin) | native | 58296 |
| Ladoga Lake | Lake | introduced | 59043 |
| Palearctic | Zoogeographic realm | endemic | 1441 |
| Rhine | River (basin) | introduced | 59043 |
| Vistula | River (basin) | introduced | 59043 |
| Volga | River (basin) | native | 58297 |