Diets deficient in omega-3 fatty acids can promote head and lateral line erosion (HLLE) syndrome in freshwater and marine fishes. Zoecon provides essential marine omega-3 fatty acids EPA and DHA. Enriches foods for saltwater and freshwater fishes. Contains shark liver oil, which contains natural immune system stimulants. Useful in raising fish and invertebrate larvae, as well as fortifying live food for juvenile and adult fishes and invertebrates. Phosphate and nitrate free, and contains no yeast or sugars.