TetraMin XL Tropical Flakes is nutritionally balanced for optimum fish health. This formula is packed with patented ProCare that offers precise doses of select vitamins and nutrients to support immune system health, Biotin to help maintain metabolism, and Omega-3 fatty acids to provide energy and growth. TetraMin XL Tropical Flakes are scientifically developed to be easily digested and feature color enhancers that bring out the bright colors of your tropical fish. All the benefits of TetraMin, the world's leading flake food, in a larger flake for bigger fish.