| Main Ref. | Skurdal, J., T. Qvenild and T. Taugbol, 1992 |
| To | Lake Steinsfjorden |
| FAO area | Europe - Inland waters |
| From | Unspecified |
| FAO area | Europe - Inland waters |
| Year | 1850 |
| Range | |
| Period | 19th century |
| Established in the Wild | yes, self reproducing |
| Established in Aquaculture | |
| Significant Ecological Interactions | |
| Significant Socio-economic Effects | |
| Introduced by | unknown |
| Reason | unknown |
| Other Reason | |
| Comments | Surface area: 13.9 km^2. Maximum depth: 24 m; Mean depth 10.2 m; Altitude: 63 m above sea level; Climate: semicontinental, cold winters and hot summers. Currently dense population subject of unlicenses fishery of great recreational and economic importance. |