Assessment of fish productivity of the Yaski fishery for forming a special commercial fishery

Abstract

The Odessa region is very rich in various water bodies and according to the natural and climatic conditions of the territory, they all are suitable for fish production. Commercial fish production on the basis of pond farms of different purposes is a promising area in fish farming. Its value in the agricultural sector of the country is increasing steadily. Modern fisheries in the most small water bodies do not take into account the productive capabilities of these bodies. The gap between the possible and actual fish productivity magnitudes is large enough and reaches one or two orders of magnitude, indicating significant reserves which rational using will improve the fishery efficiency. In this case, the main increase in production can be obtained by optimizing the use of natural feed resources, i.e. using grazing aquaculture. It is difficult to overestimate the value of the natural feed base for aquaculture. In complex water bodies it is a necessary part of a fish ration, which largely determines a success of fishing. A pond natural feed base includes a complex of hydrobionts that are used for feeding directly or through intermediate food units and determines increasing in fish products. In this case, a natural feed base is divided into a potential base, which includes the whole complex of aquatic organisms inhabiting the water body, and a real base, i.e. a part of a potential forage base, which is consumed by a certain fish species at this age stage. The purpose of the work was to find out the fish productivity of the Yaski fishery in order to create a special commercial fishery. In this work, the possibility of efficient fishery management and obtaining the commercial fish products in the Yaski fishery and their further sale to the population is proved and the recommendations for the creation of a special commercial fishery are given.