| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Amudar'ya | River (basin) | native | 30700 |
| Amur | River (basin) | native | 51717 |
| Baltic Sea | Sea/Bay/Gulf | introduced | 36252 |
| Denmark river drainages and lakes | River (basin) | native | 59043 |
| Don | River (basin) | native | 58293 |
| Elbe River | River (basin) | native | 59043 |
| Erqishi River | River (basin) | native | 41093 |
| Issyk-Kul Lake | Lake | introduced | 41059 |
| Kamchatka | Sea/Bay/Gulf | native | 50610 |
| Kuban River | River (basin) | questionable | 58296 |
| Lake Peipus | Lake | native | 122793 |
| Morava River | River (basin) | introduced | 83969 |
| Neman (Niamunas) River | River (basin) | native | 59043 |
| Oder | River (basin) | native | 59043 |
| Palearctic | Zoogeographic realm | endemic | 556 |
| Sakhalin Island | River (basin) | native | 58299 |
| Southern Baltic Coastal river drainages and lakes | River (basin) | native | 59043 |
| Vistula | River (basin) | native | 59043 |
| Volga | River (basin) | native | 58297 |
| Weser | River (basin) | native | 59043 |
| Yili River | River (basin) | native | 41093 |