For citations:
Ostrovskaya E.V., Semenchenko N.N. Researches of freshwater commercial fish species of the Amur river basin in 2018–2020 (biological state, abundance, distribution, and prospective targets of the fishery). Problems of Fisheries. 2022;23(4):186-208. (In Russ.) https://doi.org/10.36038/0234-2774-2022-23-4-186-208