Biotechnology has revolutionized aquaculture, introducing new methods to enhance productivity, disease management, and environmental sustainability. Genetic engineering, probiotics, and immunostimulants are among the biotechnological innovations improving fish growth and health. For example, recombinant DNA technology enables the creation of fish with desired traits, such as faster growth rates and disease resistance. Biotechnology also aids in waste management, with biofilters and microbial treatments helping to maintain water quality in aquaculture systems. These advances support the sustainable expansion of aquaculture, allowing for higher yields with reduced environmental impact. With continued research, biotechnology is set to further transform the aquaculture industry.