| Main Ref. | Bartley, D.M. (comp./ed.), 2006 |
| To | Norway |
| FAO area | Atlantic, Northeast |
| From | United States of America |
| FAO area | |
| Year | 1000 |
| Range | |
| Period | Pre 18th century |
| Established in the Wild | yes, self reproducing |
| Established in Aquaculture | |
| Significant Ecological Interactions | |
| Significant Socio-economic Effects | |
| Introduced by | unknown |
| Reason | accidental |
| Other Reason | unknown |
| Comments |