Thrive Koi Nourish Cool Water Diet Fish Food 5 Lbs. Bag Specially formulated for easy digestion during winter months. Includes wheat germ. Smaller 5mm Size for all fish types. Rich In Vitamins & Minerals, Low levels of Phosphorus To Reduce Environmental Impact Cool Weather Season Diet: 28% Protein Formulation. Fortified with probiotics to reduce fish waste. Packaged for Peak Freshness: All varieties of Thrive Koi Nutrition Fish Food Are Packaged In 5lb Poly Bags to maintain peak freshness. Open What You Need & Keep The Rest Sealed For Peak Freshness Until Needed FedEx Ground or FedEx Home Delivery