This floating stick is an ideal diet for koi and brightens the colors of all pond fish. It has natural color enhances and stabilized vitamin C. Use in late spring, summer and early fall. It blends both animal and vegetable proteins to ensure complete nutritional value. The sticks soften immediately in water to release strong appetite stimulants and remains edible in water for a long time, for less mess and water pollution. Completely digestible, ideal for all sized koi.