Emerald Entrée, although formulated for marine fish, has been shown to be an excellent diet for freshwater fish as well. Fish that rely on micro-algae and vegetable matter as a main nutrition source will benefit from Emerald Entrée's nutritional package that provides adequate levels of proteins, lipids, vitamins and pigments. We have added Mysis Shrimp as a natural attractant and have included high levels of essential fatty acids like HUFAs, DHA and EPA, and a high level of vitamin C. This formula provides essential nutrients that help maintain high energy levels and vigor in your fish.