Koi or Japanese carp is a fish of amazing beauty, bright color, medium size, and high resistance to external influences. In the Far East, these fish were launched into backyard fish ponds and watched their variegated movements. Today koi are very popular on fish farms and household ponds. Koi carp food is of particular importance. Therefore, it is important to know what to feed them, since it is the balance of nutrients that allows the inhabitants of the lakes to have a bright and rich color of the scales.