Tomigai Tategoi Koi FoodBenefits As fresh as the day it was made! Oxygen, the primary cause of spoilage, is forcibly removed during the packaging process and is replaced with Nitrogen to maintain quality and freshness for extended periods of time Suitable for medium and large sized Koi fish Koi come to the surface to eat the floating pellets, making it easy to inspect them for any health problems or injuries Medium protein content allows for easy digestion and less waste in