| Country | Locality | Introduced | Year | Qualitative Value | Ref. |
|---|---|---|---|---|---|
| Greece | Strymonikos Gulf (Aegean Sea) | 1997 - 1997 | rare | 58475 | |
| Greece | Strymonikos Gulf (Aegean Sea) | 1997 - 1997 | absent | 58475 | |
| Greece | Strymonikos Gulf (Aegean Sea) | 1997 - 1997 | absent | 58475 | |
| Greece | Strymonikos Gulf (Aegean Sea) | 1997 - 1997 | absent | 58475 | |
| Greece | Strymonikos Gulf (Aegean Sea) | 1998 - 1998 | absent | 58475 | |
| Greece | Strymonikos Gulf (Aegean Sea) | 1998 - 1998 | absent | 58475 | |
| Portugal | Óbidos Lagoon | 1993 - 1994 | common | 74793 | |
| Portugal | south and southwest coast of Portugal | 2006 - 2007 | extremely abundant | 85184 |