| Country | Locality | Introduced | Year | Qualitative Value | Ref. |
|---|---|---|---|---|---|
| Turkey | Southern Black Sea | 1991 - 1991 | very common | 3031 | |
| Turkey | Southern Black Sea | 1992 - 1992 | very common | 3031 | |
| Turkey | Southern Black Sea | 1992 - 1992 | abundant | 3031 | |
| Bulgaria | Western Black Sea | 1993 - 1993 | abundant | 3031 | |
| Bulgaria | Western Black Sea | 1994 - 1994 | very common | 3031 | |
| Bulgaria | Western Black Sea | 1995 - 1995 | extremely abundant | 3031 |