| Main Ref. | Hill, M., R. Baker, G. Broad, P.J. Chandler, G.H. Coop, J. Ellis, D. Jones, C. Hoyland, I. Laing, M. Longshaw, N. Moore, D. Parrott, D. Pearman, C. Preston, R.M. Smith and R. Waters, 2005 |
| To | Thames Estuary |
| FAO area | Atlantic, Northeast |
| From | Unspecified, Japan |
| FAO area | Pacific, Northwest |
| لاس | 1935 |
| Range | |
| Period | 19th century |
| Established in the Wild | yes |
| Established in Aquaculture | |
| Significant Ecological Interactions | yes - adverse |
| Significant Socio-economic Effects | |
| Introduced by | |
| Reason | accidental with ships |
| Other Reason | |
| تاحيضوت | Diadromous. Migrates up rivers but needs salinity to breed. On the IUCN 100 of the worst invasive alien species. عجرم Hill, M., R. Baker, G. Broad, P.J. Chandler, G.H. Coop, J. Ellis, D. Jones, C. Hoyland, I. Laing, M. Longshaw, N. Moore, D. Parrott, D. Pearman, C. Preston, R.M. Smith and R. Waters, 2005 |