| Main Ref. | Bartley, D.M. (comp./ed.), 2006 |
| To | United Kingdom |
| FAO area | Atlantic, Northeast |
| From | USA Atlantic coast |
| FAO area | |
| Year | |
| Range | 1870 - 1879 |
| Period | 19th century |
| Established in the Wild | yes |
| Established in Aquaculture | |
| Significant Ecological Interactions | unknown - undecided |
| Significant Socio-economic Effects | |
| Introduced by | unknown |
| Reason | unknown |
| Other Reason | |
| Comments | Joint Nature Conservation Committee; It is one of the many species introduced with American oysters. It is probably present in other estuaries, but as it is not present in British keys it is likely to be mis-identified or not identified. |