Duckweed is a native aquatic floating plant in Florida. Though very small, it is the largest of the duckweeds. Lemna Minor is frequently found growing in rivers, ponds, lakes. It Gives you an greenery look of your pond and aquarium and a hiding place for your fish.it is dark, glossy green. Bottom ? reddish purple.Giant Duckweed is easy to grow and is fine with low-light setups, although more light means faster and denser growth. It grows by absorbing waste from the water, which reduces the pollutants that cause smelly or cloudy water and makes for happier pond or aquarium inhabitants.