| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Baltic Sea | Sea/Bay/Gulf | questionable | 6114 |
| Black Sea | Sea/Bay/Gulf | introduced | 683 |
| Geneva | Lake | native | 59043 |
| Issyk-Kul Lake | Lake | introduced | 41059 |
| Kara Sea | Sea/Bay/Gulf | native | 117988 |
| Mediterranean Sea | Sea/Bay/Gulf | introduced | 2163 |
| Neva River (Ladoga Lake exclusive) | River (basin) | native | 593 |
| Palearctic | Zoogeographic realm | endemic | 13696 |
| Sevan | Lake | native | 41094 |