TetraMin Tropical Flakes (4.52 lbs) The world's favorite fish food continues to be the innovation leader. The latest version of this 55-year-old original has been optimized with the fishkeeper's success in mind. Dispenser lids (on select sizes) allow hands-free feeding and an easier-to-digest formula yields Tetra's "Cleaner & Clearer Water" guarantee. TetraMin® Flakes continue to be packed with patented, health-enhancing ProCare. This precise blend of immunostimulants, vitamins, biotin, and Omega-3 fatty acids is custom-designed to strengthen fish's resistance to disease and stress.