| Main Ref. | Cosel, R.V., J. Doerjes and U. Muehlenhardt-Siegel, 1982 |
| To | North Sea |
| FAO area | Atlantic, Northeast |
| From | Western Atlantic Ocean |
| FAO area | |
| Year | 1978 |
| Range | |
| Period | 1975-present |
| Established in the Wild | yes, self reproducing |
| Established in Aquaculture | rarely used |
| Significant Ecological Interactions | yes - undecided |
| Significant Socio-economic Effects | |
| Introduced by | unknown |
| Reason | accidental with ships |
| Other Reason | |
| Comments |