| Country | Locality | Introduced | Year | Qualitative Value | Ref. |
|---|---|---|---|---|---|
| Hong Kong | 101 sites around Hong Kong | 2001 - 2001 | abundant | 67458 | |
| Hong Kong | Tolo Harbour and Tolo Channel | 1975 - 1975 | very common | 126479 | |
| Hong Kong | Tolo Harbour and Tolo Channel | 1980 - 1980 | common | 126479 | |
| Hong Kong | Tolo Harbour and Tolo Channel | 1986 - 1986 | common | 126479 | |
| Hong Kong | Tolo Harbour and Tolo Channel | 1997 - 1997 | common | 126479 | |
| Hong Kong | Tolo Harbour and Tolo Channel | 1999 - 1999 | common | 126479 |