| Main Ref. | Bartley, D.M. (comp./ed.), 2006 |
| To | Denmark |
| FAO area | Atlantic, Northeast |
| From | Sweden |
| FAO area | |
| Year | |
| Range | |
| Period | unknown |
| Established in the Wild | yes, self reproducing |
| Established in Aquaculture | |
| Significant Ecological Interactions | unknown |
| Significant Socio-economic Effects | |
| Introduced by | unknown |
| Reason | unknown |
| Other Reason | |
| Comments | This species has been introduced only in closed waters but is now found and also reproducing in open waters. |