The paper considers results of the analysis of salmon fisheries in Kamchatka Region in 2018–2022 (for pink salmon 2017–2022). The material analyzed includes commercial fishery statistics data presenting information on annual, seasonal and daily catches of pink salmon and chum salmon for the main units of the regional stocks. The main patterns are shown and critical points are outlined to justify predictions of the runs/catch of spawners. In addition, multi-year estimates of the variability of spawning stocks of pink salmon and chum salmon with respect to spawning escapement targets are presented.

The paper considers results of the analysis of salmon fisheries in Kamchatka Region in 2018–2022. The material analyzed includes commercial fishery statistics data presenting information on annual, seasonal and daily catches of sockeye salmon, coho salmon, chinook salmon for the main units of the regional stocks. The main patterns are shown and critical points are outlined to justify predictions of the runs/catch of spawners. In addition, multi-year estimates of the variability of spawning stocks of sockeye salmon, coho salmon, chinook salmon with respect to spawning escapement targets are presented.

 The paper presents data on monitoring the conditions and quality of otolith marking of incubationlarval material, and releases of Pacific salmon, reared at three fish hatcheries of the Magadan Region for the purpose of artificial reproduction. An effective assessment of marking chum, pink and coho salmon of the 2021 generation and the further possibility to identify adult hatchery-reared individuals during anadromous migration into the hatchery-home lakes or rivers.

It is demonstrated based on results of bottom trawl surveys, that basis of flatfish resource in the West Bering Sea zone is formed by flathead sole, Alaska plaice and northern rock sole, respectively 40.3, 35.1 and 19.6% in the total flatfish biomass averaged for the period 2000–2021. Almost three quarters of the estimated flatfish stock of the zone are within the Anadyr Gulf. In 2001–2021 the stock was relatively stable and demonstrated a slight trend to growth. Estimates of the total biomass increased from 153 thous. t in 2001 to 230–305 thous. t in 2020–2021. The analysis of the current flatfish fishery showed that the major contribution to annual catches is made by the specialized fishery by bottom trawls – 39.4% and by Danish seines – 25.4%, and about 12.8% is taken as by-catch in the walleye pollock fishery by pelagic trawls. About 77.1% of the annual catches of flatfish reported in the West Bering Sea zone are taken from 169°E in Olutor Based on the analysis of the annual flatfish catch by different types of fishery, species composition of the catches and seasonal catch dynamics, the average proportion of northern rock sole in the total annual catches was about 53.1%. It is shown, that stocks of northern rock sole in this area bear the main fishing load, and Alaska plaice and flathead sole are not developed in full. Optimal scheme of the flatfish TAC assessment for the West Bering Sea zone is developed. It includes calculation of commercial biomass of northern rock sole by cohort methods, development of its fishery regulation rule, the TAC assessment based on this rule and assessment of possible by-catch of “minor” flatfish species based on their long-term proportional contribution into the catches.

Data on the rate of maturation during the linear growth of flounder species in the northern part of the Sea of Okhotsk based on samples collected in 1997–2019 are given. These data contradict the idea developed in the literature about the flounders of the northern part of the Sea of Okhotsk as small-sized, early maturating species. The flounders reach sexual maturity when they reach approximately the same size and age as in northern populations of the same species. In comparison with the populations of the corresponding species in the south of the range, all of them are characterized by relatively late and long maturation, and become fully mature shortly before the end of their life cycle.