Koi All Round Multi Mix 6 mm is highly digestible and minimally impacts water quality. • Relatively low protein and fat content. • Green: This feed contains a very small percentage of spirulina, just enough to maintain the color of the Koi. • Red: This feed contains paprika to maintain the color of the Koi. • Yellow: This feed contains wheat germ, making it easily digestible. • Brown: This feed contains animal proteins that can promote the growth of Koi.