| Main Ref. | Gollasch, S. and S. Nehring, 2006 |
| To | Inland waters. |
| FAO area | Europe - Inland waters |
| From | New Zealand. |
| FAO area | Pacific, Southwest |
| Year | 1900 |
| Range | |
| Period | 19th century |
| Established in the Wild | Unknown |
| Established in Aquaculture | |
| Significant Ecological Interactions | yes - adverse |
| Significant Socio-economic Effects | |
| Introduced by | |
| Reason | ballast water |
| Other Reason | |
| Comments | Reintroduced to the Black Sea region in 1908. Also acts as parasite carrier. It was observed in the western Baltic Sea as early as 1887 and spread across the rest of the Baltic Sea at a rate of 20-50 km/year (Ref. 69779). Ref. Gollasch, S. and S. Nehring, 2006 |