Aquaculture is a rapidly expanding industry with steadily rising production. The ultimate source of cellular carbon and chemical energy for other species, algae are photosynthetic creatures. Microalgal bioactive substances have been demonstrated to benefit health, including cardiovascular protection, anti-obesity, anti-oxidative, and anti-cancer properties. Due to their great nutritional content, microalgae like Spirulina and chlorella are taken as food and dietary supplements. Let’s see the importance of microalgae for the aquaculture industry in brief: Microalgae are an important supplement to the aquaculture diet: The ultimate source of cellular carbon and chemical energy for other species, algae are photosynthetic creatures. Therefore they were frequently referred to as primary producers. They are often divided into macroalgae and microalgae. Microalgal bioactive substances have been demonstrated to have beneficial impacts on health, including cardiovascular protection, a...