| Reference no. | Winkler, H.M., K. Skora, R. Repecka, M. Ploks, A. Neelov, L. Urho, A. Gushin and H. Jespersen, 2000 |
| Ecosystem | Baltic Sea |
| Status | native |
| Abundance | occasional (usually not seen) |
| Lifestage | juv./adults |
| Regional database | |
| Remarks | Inward to Finnish Gulf (Ref. 34302). Very rare in Baltic basin (Ref. 59043). HELCOM: endangered; vulnerable in southwestern Baltic; critically requested by Poland, Gulf of Finland and Estonia; considered a high priority species (Ref. 83294). |