| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Adour | River (basin) | native | 59043 |
| Albegna | River (basin) | introduced | 45688 |
| Baltic Sea | Sea/Bay/Gulf | native | 36252 |
| Bay of Biscay river drainages and lakes | River (basin) | native | 59043 |
| British islands basins | River (basin) | native | 59043 |
| Bug | River (basin) | native | 59043 |
| Central Danube | River (basin) | native | 59043 |
| Central Dnieper | River (basin) | native | 59043 |
| Cote Azur | River (basin) | native | 59043 |
| Danube | River (basin) | native | 59043 |
| Danube Delta | River (basin) | native | 59043 |
| Desna | River (basin) | native | 59043 |
| Dnester | River (basin) | native | 59043 |
| Dnieper | River (basin) | native | 26334 |
| Dnieper-Bug Liman | River (basin) | native | 59043 |
| Drava River | River (basin) | native | 59043 |
| Elbe River | River (basin) | native | 54732 |
| Fiora | River (basin) | introduced | 45688 |
| Goryn | River (basin) | native | 59043 |
| Loire | River (basin) | native | 59043 |
| Lower Danube | River (basin) | native | 59043 |
| Lower Dnieper | River (basin) | native | 59043 |
| Lower Prypiats | River (basin) | native | 59043 |
| Meuse | River (basin) | native | 1756 |
| Neman (Niamunas) River | River (basin) | native | 59043 |
| Oder | River (basin) | native | 59043 |
| Ombrone | River (basin) | introduced | 45688 |
| Palearctic | Zoogeographic realm | endemic | 1739 |
| Prut | River (basin) | native | 59043 |
| Psel | River (basin) | native | 59043 |
| Rhine | River (basin) | native | 59043 |
| Rhône | River (basin) | native | 59043 |
| Sarata | River (basin) | native | 59043 |
| Sava River | River (basin) | native | 59043 |
| Seine | River (basin) | native | 59043 |
| Siret | River (basin) | native | 59043 |
| Southern Baltic Coastal river drainages and lakes | River (basin) | native | 59043 |
| Teterev | River (basin) | native | 59043 |
| Thames | River (basin) | native | 32747 |
| Tisza | River (basin) | native | 59043 |
| Upper Danube | River (basin) | native | 59043 |
| Upper Dnieper | River (basin) | native | 59043 |
| Upper Prypiats | River (basin) | native | 59043 |
| Vistula | River (basin) | native | 59043 |
| Weser | River (basin) | native | 59043 |