| Main Ref. | Gollasch, S. and S. Nehring, 2006 |
| To | North Sea. |
| FAO area | Atlantic, Northeast |
| From | Northwest Pacific. |
| FAO area | Pacific, Northwest |
| Year | 1991 |
| Range | |
| Period | 1975-present |
| Established in the Wild | Unknown |
| Established in Aquaculture | |
| Significant Ecological Interactions | yes - adverse |
| Significant Socio-economic Effects | |
| Introduced by | |
| Reason | aquaculture |
| Other Reason | |
| Comments | Unintentionally introduced through aquaculture and causes competition, habitat modification, introduces parasites and induces hybridization with other native species. Ref. Gollasch, S. and S. Nehring, 2006 |