| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Aral Sea | Sea/Bay/Gulf | not established | 26334 |
| Atlantic Ocean | Sea/Bay/Gulf | native | 26334 |
| Balkan river drainages and lakes | River (basin) | native | 59043 |
| Balkanabat basin | River (basin) | native | 59043 |
| Baltic Sea | Sea/Bay/Gulf | introduced | 36252 |
| Black Sea | Sea/Bay/Gulf | native | 26334 |
| Bug | River (basin) | native | 59043 |
| Caspian Sea | Lake | native | 36771 |
| Central Turkey river drainages and lakes | River (basin) | native | 59043 |
| Crimean Peninsula | River (basin) | native | 59043 |
| Danube | River (basin) | introduced | 52471 |
| Danube Delta | River (basin) | native | 59043 |
| Dnester | River (basin) | native | 86607 |
| Dnieper | River (basin) | native | 59043 |
| Dnieper-Bug Liman | River (basin) | native | 59043 |
| Don | River (basin) | native | 26334 |
| Don Delta | River (basin) | native | 59043 |
| Eastern Black Sea | River (basin) | native | 59043 |
| Eastern Caspian Sea river drainages and lakes | River (basin) | native | 59043 |
| Eastern Mediterranean river drainages and lakes | River (basin) | native | 59043 |
| Elbe River | River (basin) | introduced | 104839 |
| Great Lakes | Lake | introduced | 86798 |
| Krinka | River (basin) | native | 59043 |
| Kuban River | River (basin) | native | 58296 |
| Lake Erie | Lake | introduced | 86798 |
| Lake Huron | Lake | introduced | 86798 |
| Lake Michigan | Lake | introduced | 86798 |
| Lake Ontario | Lake | introduced | 86798 |
| Lake Superior | Lake | introduced | 86798 |
| Lower Danube | River (basin) | native | 59043 |
| Lower Dnieper | River (basin) | native | 59043 |
| Lower Volga | River (basin) | native | 59043 |
| Nearctic | Zoogeographic realm | introduced | 12204 |
| Northern Caspian Sea river drainages and lakes | River (basin) | native | 59043 |
| Palearctic | Zoogeographic realm | native | 26334 |
| Prut | River (basin) | native | 59043 |
| Sakarya Nehri | River (basin) | native | 59043 |
| Sal | River (basin) | native | 59043 |
| Sarata | River (basin) | native | 59043 |
| Sea of Azov river drainages and lakes | River (basin) | native | 59043 |
| Sea of Marmara | Sea/Bay/Gulf | native | 57855 |
| Severskiy Donets | River (basin) | native | 59043 |
| Southern Caspian Sea river drainages and lakes | River (basin) | native | 59043 |
| Syvash abo Gnyle more | River (basin) | native | 59043 |
| Ural | River (basin) | native | 59043 |
| Vistula | River (basin) | introduced | 94072 |
| Volga | River (basin) | native | 26334 |
| Western Caspian Sea river drainages and lakes | River (basin) | native | 59043 |
| Yenice Irmagi | River (basin) | native | 59043 |