The relevance of the article is due to the fact that full-fledged fish feed used in the industry is easily soluble in water and, when it enters the water, it is quickly washed out and does not enter the fish's body in sufficient quantities. The article presents a new approach to the formulation of recipes for pseudo-encapsulated production feed for valuable fish breeds, based on the use of the "Liebig Barrel" feeding principle, which aims to create a balanced content of all amino acids. In particular, a deficiency of any essential amino acid leads to the fact that an excess of other amino acids does not increase productivity, because the fish's body spends energy on deaminating the excess amino acids rather than on its own growth. Therefore, when developing new-generation formulations, it is necessary not only to eliminate the deficiency of any amino acid, but also to balance the content of all essential amino acids in the fish feed at an optimal level to achieve high productivity. In the developed pseudo-encapsulated compound feed, the content of fish meal was reduced by increasing the amount of protein concentrates such as amaranth meal, as well as lysine, probiotics, premix, phytase, mineral supplements, calcium, and phosphorus, and ß-carotene capsantal for coloring the muscles of trout and salmon. In addition, autotrophic microorganisms (yeast, bacteria) were added to the compound feed, which convert simple sugars, ammonium salts, alcohol, acetic acid, etc., into valuable feed proteins. The products of microbiosis were used in the starter feed for certain fish species, whose larvae do not yet have a sufficiently developed digestive system when they begin to feed actively. As a result, recipes for pseudo-capsulated production feed for valuable fish species were developed: for sturgeon (OPO – optimal, production; OPE – economical, production; for the breeding stock, OM), for trout-sturgeon (OPF – optimal, production; EPF – economical, production; for the FM broodstock), for whitefish (OPS – optimal, productive; EPS – economical, productive; for the SM broodstock). The test of experimental batches of pseudo-capsulated compound feed was carried out on one-year-old and fry of Russian sturgeon in the Malakhov A.E. peasant farm with full control of the growing environment conditions. The authors studied the growth rate of fish, the mortality rate, the feed conversion ratio, and the indicators of body condition and average daily growth. The authors prove that the developed formulations of pseudo-encapsulated production feed for valuable fish species have increased the fish's digestibility of feed by 11-13%, increased the weight gain of valuable fish species by 10-12 %, reduced the cost of fish farming products by 8-11 %, and reduced the feed conversion ratio by 13 %.

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