As far as we know, Ecological Laboratories is the first fish food manufacturer to commercially produce this type of food. Variety is the spice of life. If you don't have time to cut up fruits and vegetables for your pond fish, give them this "fruits and greens" blend. Ecological Labs has done the cutting and blending for you. There are apples, apricots, kiwis, mangos, papayas, peaches, pears, broccoli, cabbage, peas, red peppers, tomatoes, zucchini and spinach in this scientific blend.