The article reviews the use of algae in aquaculture, highlighting their environmental, economic, and health benefits. Algae are rich sources of nutrients and can effectively substitute fish meal and fish oil in aquatic feeds, improving the health and productivity of aquatic animals. They also enhance water quality, serve as nutrient-rich feed supplements, and contribute to the overall quality of aquaculture products. The review covers the cultivation process of algae, including open ponds, closed bioreactors, and photobioreactors, and discusses the regulatory aspects of using algae in aquaculture. Algae are particularly effective in treating wastewater, reducing nutrients like ammonia, nitrate, and phosphate, and improving water quality. They are also used as dietary supplements to enhance growth, immune response, and disease resistance in various aquatic species. The article emphasizes the potential of algae in sustainable aquaculture practices, contributing to environmental sustainability and resource efficiency.The article reviews the use of algae in aquaculture, highlighting their environmental, economic, and health benefits. Algae are rich sources of nutrients and can effectively substitute fish meal and fish oil in aquatic feeds, improving the health and productivity of aquatic animals. They also enhance water quality, serve as nutrient-rich feed supplements, and contribute to the overall quality of aquaculture products. The review covers the cultivation process of algae, including open ponds, closed bioreactors, and photobioreactors, and discusses the regulatory aspects of using algae in aquaculture. Algae are particularly effective in treating wastewater, reducing nutrients like ammonia, nitrate, and phosphate, and improving water quality. They are also used as dietary supplements to enhance growth, immune response, and disease resistance in various aquatic species. The article emphasizes the potential of algae in sustainable aquaculture practices, contributing to environmental sustainability and resource efficiency.