| Main Ref. | Bartley, D.M. (comp./ed.), 2006 |
| To | United Kingdom |
| FAO area | Atlantic, Northeast |
| From | Portugal |
| FAO area | |
| Year | 1926 |
| Range | |
| Period | 1925-1949 |
| Established in the Wild | yes |
| Established in Aquaculture | widely used |
| Significant Ecological Interactions | unknown - undecided |
| Significant Socio-economic Effects | |
| Introduced by | unknown |
| Reason | unknown |
| Other Reason | |
| Comments | Joint Nature Conservation Committee; This species is cultivated widely as it is eaten. It is distributed throughout England, Scotland, Wales and Ireland, and widely in Europe (France, Belgium, The Netherlands, Germany, Spain, Portugal, Denmark and Norway). |