| 参考书目 | Gessner, J., P. Williot, E. Rochard, J. Freyhof and M. Kottelat, 2022 |
| 生态系 | Baltic Sea |
| 状态 | extirpated |
| 丰度 | occasional (usually not seen) |
| 生命期阶段 | adults |
| 地区的资料库 | |
| 附注 | Threatened due to target and bycatch fisheries, construction/weirs in rivers, and habitat loss (Ref. 83294). Also Ref. 6114, 42845, 51439, 82476. HELCOM's status of threat: regionally extinct (Ref. 83294). |