The State Fisheries Agency of Ukraine is conducting a large-scale campaign to stock the country's reservoirs with aquatic biological resources. This includes the stocking of Lake Katlabukh with over 1.97 million fish, the Khadzhibey estuary with over 145,000 young carp, and the Fastiv Reservoir with 40,000 bighead. The stocking is done to restore fishing potential and maintain stable fish stocks. The article also mentions that fish farmers control the introduction of aquatic biological resources and highlights the importance of artificial reproduction of valuable ichthyofauna.