Ocean Nutrition Prime Reef Tropical Marine Saltwater Fish Food Flakes are premium reef aquarium flakes made from an array of marine ingredients. From fish fillets to plankton and squid, these flakes provide a variety of proteins to satisfy the appetites of diverse reef fish species. Ideal as a primary food, they encourage growth and vitality while enhancing color through natural carotenoids found in seafood. Despite their richness, the flakes are easy on filtration since they’re free of unnecessary binders and they hold together until eaten, contributing to a cleaner, healthier tank. Available in Multiple Sizes