Duckweed is a natural Plant that grows in swampy area and ponds. Duckweed are small, free-floating aquatic perennials that combine to form a green carpet on the surface of the water. It can also be grown indoors by collecting the plant and by putting it in water. Duckweed grows quickly in water. Duckweed serve as rich source of protein which is used for feeding fish and livestock. Duckweed have been fed to animals and fish to complement diets, largely to provide a protein of high nutritional value. Fish production can be enhanced by feeding duckweed to increase yield from a few hundred kilograms per hectare/year to 10 tonnes/ha/year.