[n = 6]
| Year / Period | From | To | Established | Ecol. effects |
|---|---|---|---|---|
| unknown | Unknown | Albania | probably not established | unknown |
| unknown | Unknown | Greece | probably not established | unknown |
| unknown | Yangtze Basin, China | Karametniyaz, Turkmenistan | established | unknown |
| unknown | China | Uzbekistan | established | |
| 1960 - 1962 | China | Romania | not established | unknown |
| 1963 | Unknown | Hungary | not established |