Tetra Pond Koi Growth Koi Fish FoodTetra Koi Growth is a high protein food for rapid fish growth containing essential amino acids that help younger fish grow. High protein levels promote rapid growth and vitality and are ideal for late spring, early summer feeding. Ideal for late spring and early summer when water temperatures are 50F and above. Easily digestible soft sticks create less waste and water pollution For young Koi and Goldfish Soft sticks are easy to eat and digest and keep