The article highlights the growth of fish cage farming in Vietnam's Hoa Binh hydroelectric lake, as encouraged by the Provincial Party Standing Committee's 2014 Resolution No. 12. The lake, located in Hoa Binh city and four districts, has become a significant hub for the aquaculture industry, with over 5,000 fish cages leading to an estimated output of 10,000 tons and an economic value of 600 billion VND annually. This industry creates jobs for nearly 2,000 local residents and has seen a rapid increase in fish output and the number of enterprises participating in large-scale farming. However, the article also points out challenges such as the decline in aquatic resources due to overexploitation and the need for resource supplementation and protection. The agricultural sector is responding by releasing fish fry and conducting classes to promote awareness about aquatic laws and the importance of resource protection. The establishment of product consumption chains and the 'Da River Fish - Hoa Binh' certification mark aims to increase the value of Da River fish and expand the market, showcasing the industry's efforts towards sustainable development.