Marine fish are the most delicate species to keep and require an appropriate amount of unsaturated fatty acids in their diet. O.S.I Marine Flakes are specially formulated to incorporate high levels of plant and animal oils provide a good source of highly-unsaturated fatty acids. A variety of plant and animal derived protein sources stimulate good growth. Natural color-enhancing pigments, spirulina, and all vitamins and minerals necessary to meet the special needs and requirements of marine fishes are also included.