The authors consider the state of the modern krill fishery and krill processing technologies, theire trends in the CCAMLR Convention Area, including the spatial-temporal dynamics of catch and fishery indices, issues of onboard and shore processing technologies of krill. The prospects for the development of the Russian krill fishery with the expansion of fishery capacities are discussed, with special attention to the priority areas of development and use of krill resources, issues of creating a Competence Center for the industrial development of krill resources based on the Atlantic branch of the VNIRO (AtlantNIRO).

This study takes the first step in assessing the quantitative and qualitative composition of waste. An analysis of the parameters of the largest commercial fishing operations in Russia and in the world, the pollock fishery, which takes place annually in the northeastern part of the Sea of Okhotsk from January 1 to April 9, the so-called “A” season, allowed us to formulate a new concept – the fishing natural technology system (OSFE) and develop a methodology for assessing the life cycle of the OSFE. As a result of the application of the developed methodology, it was found that annually the OSFE catches about 0,8 million tons of raw fish in the pollock fishery in the Sea of Okhotsk during the “A” season and generates about 1 million tons of various waste, most of which enters the marine ecosystem. This necessitates the improvement of the existing national waste management system generated in the fishing process, in the Russian economic zone and in areas of international cooperation.

The study is aimed at specifying the procedures for the digital transformation of the country’s fishing industry. With their help, there is a prospect of expanding the catch, processing and sale of fish and fish products. Gain control over operations and technological processes, reduce production costs, significantly reduce losses, and increase the rationality of developing aquatic biological resources. Modern digital services of the Federal Agency for Fisheries are noted. The presented digital tools allow increasing the speed and quality of collecting and transmitting technological information. Digital technologies used by the fisheries complex receive state support.

Based on the materials collected in June-July 2024, the main biological parameters of yellowfin sole (Limanda aspera) of the Pritauysky district of the Sea of Okhotsk are considered. A brief description of the size-weight and age parameters and the sex ratio is given. For the first time, the characteristics of the fertility of some size groups of yellowfin sole of the Pritauysky district of the Sea of Okhotsk are given. 

Based on ichthyological materials collected in 2022-2024 on the Samur coast of the Caspian Sea, the biological indicators of the main commercial fish species such as Caspian roach, kutum, bream, Caspian vimba and shemaya are considered. It is shown that in the considered part of the Caspian Sea, the biological parameters of the commercial fish species studied by us are currently in a more favorable condition compared to the Agrakhan and Kizlyar bays.

Statistical information on fishery in 2022 - 2024 on the part of the river Severnaya Dvina River, located outside the boundaries of the seaport of Arkhangelsk was analyzed. Analysis of the composition of catches showed that the basis of catches was presented by 6 species fish and fish-like (bream, pike perch, pike, ide, burbot and lampreys). Using the literature data on fish productivity of the Severnaya Dvina River, the values of possible catch at the fishing areas formed and assigned to users were estimated. The estimated catch amounted to more than 156 tons per year, which is 4.3 times higher than the average recorded in 2022-2024 annual catch. The reason for the small using of the recommended volumes is the lack of rationing of the withdrawal of aquatic biological resources in relation to fishing areas. Amendments to regulatory documents have been proposed in terms of concluding a single agreement on the use of several species of aquatic biological resources, and not separately for each fish species.

The article discusses the changes that have occurred over the past seven years in the biological parameters of the blue bream. The material was collected using fixed gill nets in the lower part of the Sviyazhsky Bay of the Kuibyshev Reservoir, in the period 2018-2024. An analysis and assessment of the transformations that occurred with biological indicators during the observations are provided, and these changes are compared with earlier periods of the reservoir ecosystem.

The biotechnics of trout breeding in recycled water supply installations, based on the constancy of the temperature regime (10-12 °C), led to the appearance of females with double maturation during the year. Bicyclic females are characterized by a shortened period of gametogenesis, which is usually accompanied by a lag in growth and the production of smaller eggs, unlike fish with a single spawn. The weight and size of salmon eggs are one of the main parameters that determine the quality of eggs. This trait is the final criterion in the evaluation and the initial one in the evaluation of offspring, therefore, the characterization of bicyclic females in terms of egg quality is important in breeding work. This served as the basis for studying accelerated trout maturation, the understanding of which can contribute to unlocking the biological potential of a popular aquaculture facility. The paper presents experimental data on the individual assessment of trout producers of the Adler (Adler breeding plant) and Rofor (FSGCR) breeds with different spawning rates in a comparative aspect.

The paper presents the results of a production experiment with young sterlet (Acipenser ruthenus L. 1758) conducted at the fish-breeding enterprise OOO Novaya Akvakultura in the Tyumen Region in a closed water supply system. The aim of the study was to assess the effect of probiotics on the results of growing young sterlet (Acipenser ruthenus L. 1758). Probiotics of various microbiological compositions were added to the diet of young sterlet in the experimental groups at a rate of 0.5 g per kg of feed. The inclusion of probiotic organisms in the diet ensured an increase in the absolute growth rate of juveniles of the experimental groups by 23.29 and 22.14% compared with the control group, contributed to a decrease in opportunistic microflora in the spiral intestine, which is confirmed by a decrease in CFU/ml of Bacillus mesentericus, Bacillus cereus and the absence of Bacillus mycoides, Acinetobacter calcoaceticus, Citrobacter freundii. The profile of the interior features of the studied groups was within acceptable values. In juveniles of the experimental groups, compared with the control, there was a smaller difference in the intestinal index – 3-8%, gills – 7-8% and gonads – 3-10%.

The analysis of the critical age is given for the scientific research vessels, and in this regard the question is raised about the best choice – will it be either the building of new vessels, renovation or modernization. All options for domestic and foreign R/Vs were studied and the examples are given as well. The question posed suggests only one answer – building. However, during the construction of ships it is necessary to provide for the possibility of renovation and modernization in the future with minimal reengineering which will prolong their life for a long time.

Currently, there is a situation in which shipowners of fishing companies cannot receive fully competitive ship repair services in domestic ports. The study showed that comprehensive ship repair services require not only new innovative ship repair facilities, but also ship-lifting facilities (floating docks, dry docks, boathouses).

Various scientific approaches, such as systematic, complex, situational, and targeted, were used to conduct qualitative research. The article proves the prospect of innovative development of ship repair within the framework of close integration of the fleet and the ship repair enterprise.

Methods of using stationary and mobile hydroacoustic devices for measuring fish distribution and density in different zones of the vessel-trawl accounting fishing system have been developed. Experimental estimates of the characteristics of the spatial distribution of walleye pollock and the avoidance response to the vessel’s noise field have been obtained. Measurements of depth-differentiated walleye pollock catchability coefficients have been made as part of the vessel-trawl accounting system, which summarize the avoidance of vessel noise by fish and the efficiency of the trawl itself. A model of fish movement behavior in the vessel’s noise field has been developed. Integrating this model into the algorithm of echo integration and trawl surveys will allow estimating the initial structure and spatial distribution (density) of catchable aggregations, thereby allowing for more accurate stock assessments.

The aim of the scientific research was to form the structure of fish semi-finished products with an extended shelf life by introducing plant materials into the mince. The objects of the study were: pollock, onions, eggs, dry milk, water, plant additives: buckwheat flour, corn, rice, chickpeas, freeze-dried plant materials: spirulina and dill; spices used to prepare model mince and culinary products - cutlets. Combinations of the proportion of fish, biologically active additives and freeze-dried spices providing an extended shelf life were selected experimentally and in the process of tasting. Having performed a criterial assessment of the amino acid composition of proteins of the main raw materials and based on the Gibbs-Rosebohm diagram, the optimal protein ratio was established: fish: cereals: dry milk 77: 10.5: 12.5. The stabilization of the structure of semi-finished and finished culinary products is achieved by adding milk and eggs to the mince, and plasticity is achieved by adding butter. Extended shelf life is achieved by using raw materials rich in polyphenols, vitamins and antioxidants.

The development of standard schemes for the control of technological processes for the manufacture of fish products is becoming particularly relevant in the framework of implementing the requirements of technical regulations for production processes, the safety of fish products and improving their quality. As a result of the analysis of the technology, the main points of control of the process of making frozen crab products were determined, the controlled parameters and their characteristics at each stage of production were identified. The developed scheme can be used as a basis for production control of the technological process of making frozen crabs.

The study focuses on the evaluation of quality parameters of fish semi-preserves "Fish Pâtés Enriched with Probiotic Microorganisms." The primary objective was to investigate the physicochemical, organoleptic, and microbiological properties of the product obtained via biotransformation of raw materials using bacterial starter cultures (L. acidophilus and S. thermophilus). Nutritional value parameters, including the content of proteins, fats, carbohydrates, caloric value, and water activity, were determined. The microbiological safety and preservation of probiotic cultures in the final product were analyzed. Organoleptic evaluation confirmed the high consumer appeal of the product. The results demonstrate the stability of the quality parameters and compliance of the product with the requirements for functional foods.