[n = 10]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| unknown | USSR | Norway | probably established | |
| unknown | Unknown | Latvia | probably established | |
| unknown | Unknown | Iran | probably established | unknown |
| 1960 - 1969 | Russian Fed | Finland | not established | unknown |
| 1932 | Unknown | USSR | not established | |
| 1955 | Puget Sound, Washington | Winisk River, Attawapiskat River | not established | |
| 1964 | Russian Fed | Iran (Caspian Sea) | not established | unknown |
| 1970 | USA | Chile | probably established | |
| 1970 | Japan | Chile | probably established | |
| 1988 | Russian Fed | China | unknown | no data |