| Reference no. | Berg, L.S., 1962 |
| Ecosystem | Baltic Sea |
| Status | native |
| Abundance | |
| Lifestage | adults |
| Regional database | |
| Remarks | Found in the Gulf of Finland and Gulf of Bothnia. Threatened due to eutrophication/pollution, target and bycatch fisheries, and construction/weirs in rivers (Ref. 83294). HELCOM's status of threat based on IUCN: vulnerable (Ref. 83294). |