| Main Ref. | Gollasch, S. and S. Nehring, 2006 |
| To | Inland waters. |
| FAO area | Atlantic, Northeast |
| From | Northwest Pacific. |
| FAO area | Pacific, Northwest |
| Year | 1912 |
| Range | |
| Period | 1900-1924 |
| Established in the Wild | Unknown |
| Established in Aquaculture | |
| Significant Ecological Interactions | yes - adverse |
| Significant Socio-economic Effects | |
| Introduced by | |
| Reason | accidental with ships |
| Other Reason | diffused from other countries |
| Comments | Causes competition, habitat modification, and acts as parasite carrier. Possibly also spread into the Baltic Sea via the Kiel Canal (Ref. 111600). Ref. Gollasch, S. and S. Nehring, 2006 |