Nourish your finned friends with the scientifically proven premium quality nutrition of Hikari Gold Koi Fish Food. Featuring a protein rich formula these highly-palatable floating pellets provide an optimally balanced color enhancing diet. Considered the quality leader in aquatic nutrition for decades. Hikari devotes a significant amount of time money and resources into studying the dietary needs and preferences of fish in both their natural environments and in aquatic laboratory settings to determine the precise balance of nutrients they need in order to thrive in captivity.