| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Caspian Sea | Lake | native | 82592 |
| Dnester | River (basin) | native | 82592 |
| Dnieper | River (basin) | native | 82592 |
| Don | River (basin) | native | 82592 |
| Kama | River (basin) | native | 82592 |
| Oka | River (basin) | native | 82592 |
| Palearctic | Zoogeographic realm | native | 82592 |
| Sea of Azov | Sea/Bay/Gulf | native | 82592 |
| South (Yuzhnyi) Bug | River (basin) | native | 82592 |
| Volga | River (basin) | native | 82592 |