Nutritionally balanced food for all tropical fish. The Rich Mix for energy color and long life. TetraMin has been the worlds leading fish food for over 40 years. The Rich Mix of TetraMin is a totally nutritious diet for all common tropical fish. Its created by a special process that makes each flake firm and fully digestable which greatly reduces uneaten food tank waste and increases filtering capacity. TetraMin contains essential nutrients and added Vitamin C which provide optimum care and help promote energetic fish and long life.