The age and size of the maturity reproduction of pollock individuals are subject to significant interannual variability. The main spawning of pollock on the shelf was observed: in Unimaksky district – in the 2nd decade of March and the 2nd decade of April, above depths of 75–100 m; in Pribilovsky district – in the 3rd decade of April, above depths of 70–75 m; in Matveevsky district – in the 1st decade of May, above depths of 115–140 m. In Unimak district, the main concentrations of pollock during the peak of spawning spatially coincided with the main concentrations of egg. Such coincidences were observed irregularly in the Pribylovsky and Matveevsky districts. In March, the larvae that originated from winter spawning lived not only above significant depths – 600–2000 m, with a favorable temperature regime (3,1–4,5 C), but also in the shelf zone of the Unimaksky district, where the development conditions are more severe. The largest catches of larvae of the spring generation were observed in mid-May and early June. The larvae of the spring generation are confined to the spawning ground, which indicates the absence of drift. The main reason for the variability of stocks is the number of generations included in the fishable stock. From 1980 to 2024, there were 8 high abundance generations. The average annual pollock catch in the area over a 45-year period was 1,2 million tons. Pollock stocks in the eastern Bering Sea are highly stable. Periods of low stock levels are short-lived and last several years. The average long-term exploitation rate was 12,6%, which indicates a relatively low harvest level.

This paper presents an analysis of the salmon catch in 2024 in the Far Eastern Fisheries Basin, which is based on the state monitoring data of the number of Pacific salmon approaches and official fishery statistics provided by the Territorial departments of the Federal Fisheries Agency. The reasons for the deviation of actual salmon catches from forecast estimates are analyzed.

In 2023–2024, observations on the implementation of recreation fishery of the Baikal omul were carried out for the first time. The volume of catch, the intensity of recreation fishery of Baikal omul and the catch structure were determined. the annual volume of fishing is estimated at 110 tons, and in winter «catches from the ice» reached 82%. Аnalysis of the catch structure showed that the individuals of the coastal morphological and ecological group formed the basis of catches.

The paper evaluated the effectiveness of computer vision methods for aerial visual accounting of sockeye salmon producers at the key spawning grounds of Lake Azabachye in 2024. The optimal criteria for selecting photo and video materials collected for training a computer vision model are determined.

This article examines various aspects of the seaweed harvest – Saccharina japonica (Japanese kelp) – by Japanese fishermen within Russian territorial waters near the small, uninhabited Signalny Island in the Sovetsky Strait of the Pacific Ocean, part of the Lesser Kuril Islands. Signalny Island is part of the South Kuril District of the Sakhalin Region. The article focuses on conservation measures that enable the sustainable harvest of this seaweed in Russian waters to be maintained on a long-term basis under joint agreements.

The conceptual issues of the formal representation of the dynamic structure of the spawning migration of the Aradesque greenlinling Pleurogrammus azonus are considered. Based on the factual material and literature data, its functional character is being investigated. It is assumed that spawning migration is a natural continuation of the spring migration going ashore. Its fundamental difference is the formation of spawning schools with a layered age structure. They begin to form when producers move into the deep (subsurface) water mass. The appearance of mating coloration in old males is a stimulating signal for grouping other producers around them. Leadership in the spawning school initially belongs to the old males and then passes to the old females. When moving, producers of the older age groups adhere to more stable environmental conditions compared to producers of the younger age groups. The essence of the proposed strategy is the layered movement of producers with the leadership of the older age groups, after the emergence of the mating coloration in the latter.

The article examines the potential of predictive analytics, which can be used to improve the economic policy of the Kamchatka Territory’s fisheries sector. The necessity of transition to digitalization of management is substantiated. An overview of predictive analytics methods is presented, as well as examples of their implementation in international and Russian practice. The main stages of forecasting to the operating conditions of the fisheries complex of the region are considered.

In recent years, the number of decapod crustacean species used in aquaculture has continued to increase, and production volumes are growing rapidly, reaching 12,75 million tonnes in 2022. The seven most popular species (Penaeus vannamei, Procambarus clarkii, Eriocheir sinensis, Penaeus monodon, Macrobrachium rosenbergii, Macrobrachium nipponense, Scylla paramamosain) together account for 95% of the world’s total aquaculture production. The specific biology and life cycles of decapod crustacean species determine the possibility of using intensive and extensive farming biotechnologies. At present, thermophilic species have an advantage, for which it is possible to use intensive biotechnologies or a combination of intensive and extensive biotechnologies. The need to use various resources for aquaculture has led to the presence among the most popular species both those for which intensive farming biotechnologies are mainly used, and those for which extensive approaches are used. The possibility of using marine and saltwater reservoirs is an important resource for modern decapod aquaculture. At the same time, freshwater reservoirs and low mineralization reservoirs are widely used, especially in the final stages of cultivation. The most promising species for decapod aquaculture in Russia are those with the highest production rates, which are the most widely used in global aquaculture. At the same time, due to the peculiarities of Russia’s geography and climate, the ability to use a combination of intensive (the use of ultrasound in the early stages of the life cycle) and extensive (the use of ponds for growing to marketable size) approaches to their cultivation is the most imperative condition. In addition, indigenous species of significant commercial importance are an important resource for Russian aquaculture.

The work is devoted to the expedition of the R/V «Vladimir Uskov» in 2024, which was aimed at assessing the status of commercial and mass non-commercial fish species, as well as comparison with the results of 2023. In addition, for the first time a modern method of catch analysis LBI (Length-based indicators), based on the analysis of fish size series, was used. The study notes that 16 fish species of five families were recorded in trawl catches and set nets in the Rybinsk Reservoir. As a result, the biological status of biomass and abundance of commercial fish in 2024 in the Rybinsk reservoir remains at a normal level for sustainable and precautionary fishing. Thus, the biomass and abundance of bream, pike, zander, blue bream, roach, white bream, sabrefish, Volga zander and ruff were higher in 2024 than in 2023. The populations of pike, catfish and perch remain small. Due to their small numbers, the commercial importance of ide, burbot, tench and crucian carp is still low, as evidenced by their rare catches. It is necessary to note positive efforts to release sterlet from fish hatcheries, whose juveniles were observed in trawling at Koprino station.

The paper presents a review of taxa within the salmon subfamily, based on consideration of morpho-biological characteristics, paleontological, genetic data, and features of the history of morphogenesis. It is noted that along with the Salmo and Salvelinus branches, the Parasalmo branch identified by Vladykov is part of the main macroevolutionary trunk in the evolution of salmon, taking into account diadromy and polycyclicity as the main features. At the same time, using the advantages of polycyclicity in terms of resistance to changes in environmental factors, they realized a wide settlement in the northern waters of the Atlantic and Pacific oceans, and a circumpolar distribution in the Arctic. A large group of monocyclic Pacific salmon (Oncorhynchus) prevails in the North Pacific waters with fairly stable (compared to the North Atlantic and Arctic waters) climatic and oceanographic conditions in interstadials and even more stable conditions in stadials against the background of the cessation of Arctic waters entering the region during the “drying up” of the Bering Strait during the ocean regression. Using a set of data when considering the specifics of macroevolutionary processes, based on and in development of the views of researchers on the features of the formation of the taxonomic composition of genera within the subfamily Salmoninae, a position is substantiated with a proposal to introduce in addition to the g. Parasalmo and Oncorhynchus and the g. Masou.