| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Arctic Complex | River (basin) | native | 86838 |
| Atlantic Ocean | Sea/Bay/Gulf | native | 6866 |
| Caspian Sea | Lake | introduced | 39702 |
| Danube | River (basin) | native | 124661 |
| Erqishi River | River (basin) | native | 41093 |
| Kara Sea | Sea/Bay/Gulf | native | 124011 |
| Kolyma | River (basin) | native | 26334 |
| Lake Baikal | Lake | native | 26334 |
| Lena | River (basin) | native | 6866 |
| Neotropical | Zoogeographic realm | introduced | 54736 |
| Ob River | River (basin) | native | 26334 |
| Ob-Irtysh | River (basin) | native | 26334 |
| Palearctic | Zoogeographic realm | endemic | 6866 |
| Volga | River (basin) | questionable | 58297 |
| Yenisei-Angara | River (basin) | native | 6866 |