| No. acuan | Bogutskaya, N.G. and A.M. Naseka, 2002 |
| Ekosistem | Volga |
| Status | native |
| Kelimpahan | scarce (very unlikely) |
| Lifestage | adults |
| Basis data regional | |
| Keterangan | Undertakes migration to the uppermost tributaries. There are reported indications that it has formed large landlocked populations in reservoir in the lower Volga (Ref. 59043). Also Ref. 26334. |