| Main Ref. | Ruiz, G.M., P.W. Fofonoff, J.T. Carlton, M.J. Wonham and A.H. Hines, 2000 |
| To | East coast of North America |
| FAO area | Atlantic, Northwest |
| From | Europe |
| FAO area | |
| Year | 1974 |
| Range | |
| Period | 1950-1974 |
| Established in the Wild | Unknown |
| Established in Aquaculture | |
| Significant Ecological Interactions | Unknown |
| Significant Socio-economic Effects | |
| Introduced by | |
| Reason | ornamental |
| Other Reason | accidental with ships |
| Comments |