| Main Ref. | Minchin, D., 1996 |
| To | Scandinavia. |
| FAO area | Atlantic, Northeast |
| From | USA |
| FAO area | Atlantic, Northwest |
| Year | 1500 |
| Range | |
| Period | Pre 18th century |
| Established in the Wild | Unknown |
| Established in Aquaculture | widely used |
| Significant Ecological Interactions | Unknown |
| Significant Socio-economic Effects | |
| Introduced by | |
| Reason | aquaculture |
| Other Reason | |
| Comments | Introduced before 1500 possibly for culture. Ref. Minchin, D., 1996 |