Fairy shrimps (Freshwater Anostraca) offer a variety of applications in aquaculture. They are very important live food in the culture of various aquatic larvae, growth, survival and resistance in different aquatic species especially, freshwater ornamental fish, sturgeon fish, salmon, carp, freshwater crayfish. Fairy shrimps can be used as a suitable live food in order to improve growth and the reproductive performance and enhance skin color of ornamental fish due to its high nutritional value and no harmful effects on the environment. Fresh-fairy shrimp, frozen, freeze-dried or flakes, decapsulated cysts and newly hatched larvae can be successfully used as an alternative live food in cultured species.