| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Adriatic Sea | Sea/Bay/Gulf | extirpated | 59043 |
| Aegean Sea | Sea/Bay/Gulf | native | 113897 |
| Balkan river drainages and lakes | River (basin) | native | 59043 |
| Balkanabat basin | River (basin) | native | 59043 |
| Black Sea | Sea/Bay/Gulf | native | 897 |
| Bug | River (basin) | native | 59043 |
| Caspian Sea | Lake | native | 42845 |
| Central Don | River (basin) | native | 59043 |
| Central Turkey river drainages and lakes | River (basin) | native | 59043 |
| Crete Island | Sea/Bay/Gulf | native | 113897 |
| Crimean Peninsula | River (basin) | native | 59043 |
| Danube | River (basin) | native | 9953 |
| Danube Delta | River (basin) | native | 59043 |
| Dnester | River (basin) | native | 59043 |
| Dnieper-Bug Liman | River (basin) | native | 59043 |
| Don | River (basin) | native | 9953 |
| 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 |
| Ionian Sea | Sea/Bay/Gulf | native | 113897 |
| Krinka | River (basin) | native | 59043 |
| Kuban River | River (basin) | native | 58296 |
| Lower Danube | River (basin) | native | 59043 |
| Lower Dnieper | River (basin) | native | 59043 |
| Lower Volga | River (basin) | native | 59043 |
| Mediterranean Sea | Sea/Bay/Gulf | native | 3193 |
| North Aegean | Sea/Bay/Gulf | native | 113897 |
| Northern Caspian Sea river drainages and lakes | River (basin) | native | 59043 |
| Palearctic | Zoogeographic realm | endemic | 3397 |
| Prut | River (basin) | native | 59043 |
| Sakarya Nehri | River (basin) | native | 59043 |
| Sal | River (basin) | native | 59043 |
| Sarata | River (basin) | native | 59043 |
| Sea of Azov | Sea/Bay/Gulf | extirpated | 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 |
| South Aegean | Sea/Bay/Gulf | native | 113897 |
| Southern Caspian Sea river drainages and lakes | River (basin) | native | 59043 |
| Syvash abo Gnyle more | River (basin) | native | 59043 |
| Ural | River (basin) | native | 59043 |
| Volga | River (basin) | native | 9953 |
| Western Caspian Sea river drainages and lakes | River (basin) | native | 59043 |
| Yegorlyk-Manych | River (basin) | native | 59043 |
| Yenice Irmagi | River (basin) | native | 59043 |