| Main Ref. | Dauvin, J.C., T. Ruellet, T. Thiebaut, F. Gentil, N. Desroy, A.L. Janson, S. Duhamel, J. Jourde and N. Simon, 2007 |
| To | Bay of Seine, English Channel |
| FAO area | Atlantic, Northeast |
| From | Not specified |
| FAO area | Atlantic, Western Central |
| Year | 1991 |
| Range | |
| Period | 1975-present |
| Established in the Wild | yes, self reproducing |
| Established in Aquaculture | |
| Significant Ecological Interactions | yes - undecided |
| Significant Socio-economic Effects | |
| Introduced by | unknown |
| Reason | ballast water |
| Other Reason | diffused from other countries |
| Comments | Introduction may be accidental via ballast waters or by larval dissemination from neighbouring populations. Colonization likely to be related to its southwest expansion from the Scheldt estuary (Belgium and Netherlands). Abundant population collected in 2006. Key species after introduction (Ref. 80352). |