| Year / Period | From | To | Established | Ecological effects |
|---|---|---|---|---|
| unknown | Not specified | United Kingdom | ||
| unknown | unknown | Zimbabwe | unknown | unknown |
| unknown | Not specified | Singapore | ||
| unknown | Not specified | Norway | ||
| unknown | Australia | Nigeria | ||
| unknown | Not specified | Guatemala | ||
| unknown | unknown | Germany | probably yes | unknown |
| unknown | unknown | France | yes | yes |
| unknown | unknown | Costa Rica | yes | unknown |
| unknown | Not specified | Colombia | ||
| unknown | unknown | Taiwan Province of China | unknown | unknown |
| unknown | Not specified | Belize | ||
| unknown | Not specified | Brazil | ||
| unknown | unknown | Sudan | probably yes | unknown |
| unknown | Not specified | Sweden | ||
| unknown | unknown | Uganda | probably yes | unknown |
| unknown | unknown | Egypt | unknown | unknown |
| 1940 - 1949 | Japan | China | yes | yes |
| 1990 - 1999 | United States of America | Ecuador | yes | unknown |
| 1990 - 1999 | North America. | Inland waters. | unknown | yes |
| 1980 - 1989 | Kenya | Italy | probably no | unknown |
| 1990 - 1999 | unknown | Portugal (Sao Miguel, Azores) | unknown | unknown |
| 1924 | North America | West coast of North America | yes | unknown |
| 1930 | United States of America | Japan | yes | unknown |
| 1934 | United States of America | Hawaii | yes | yes |
| 1962 | unknown | South Africa | yes | unknown |
| 1966 | United States of America | Kenya | unknown | yes |
| 1966 | Uganda | Kenya | unknown | unknown |
| 1974 | United States of America | Spain | yes | yes |
| 1977 | United States of America | Dominican Republic | yes | yes |
| 1978 | Kenya | Zambia | probably no | unknown |
| 1978 | unknown | Venezuela | yes | unknown |
| 1979 | Spain | Portugal | yes | probably yes |
| 1984 | Singapore | Cyprus | yes | probably no |
| 1985 | United States of America | Netherlands | probably yes | |
| 1987 | United States of America | Thailand | yes | probably yes |
| 1987 | United States of America | Panama | unknown | unknown |