Repashy SuperFly Our Instant Formula for Drosophila Culture. This Premium Mixture is fortified with Minerals, Trace Elements, Vitamins, and Carotenoids in order to Maximize the Nutritional Value of Fruit Flies when they are Used as Feeders. Guaranteed Analysis: Crude Protein min. 15%, Crude Fat min. .2%, Crude Fiber max. 3%, Moisture max. 8%, Ash max. 10%, Calcium min. .5%.