The America’s Best Koi Food 25 lbs Koi Fish Food is a high-quality fish food that is designed to be fed to your koi or pond fish daily. This fish food features a 32% protein low fat diet that is best suited for adult koi and pond fish. The America’s Best Koi Food 25 lbs Koi Fish Food also ships by UPS ground and is available in factory-sealed heavy duty multi-layer bags weighing approximately 25 lbs.