| ນ້ຳເບີເອກະສານອ້າງອີງ | Winkler, H.M., K. Skora, R. Repecka, M. Ploks, A. Neelov, L. Urho, A. Gushin and H. Jespersen, 2000 |
| ລະບົບນິເວດ | Baltic Sea |
| ສະຖານະພາບ | native |
| ຄວາມອຸດົມສົມບູນ | occasional (usually not seen) |
| ຂັ້ນຕອນຂອງການມີຊີວິດ | juv./adults |
| ຖານຂໍ້ມູນລະດັບພາກພື້ນ | |
| ຂໍ້ສັງເກດ | 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). |