Duckweed

Also known by its scientific name Lemnaceae and Lemna minor, Duckweed is a floating plant that sits just above the water’s surface while its roots are dangling below. It has small, oval-shaped leaves (also called fronds or pods) and is one of the smallest flowering plants. From the surface, it looks like a miniature lily pad when it blooms. The leaf surface is a vibrant green color that may appear dark green or even purple underneath, while the roots are a dull yellow or white. Duckweed management can be challenging, but the benefits outweigh the negatives: The plant removes heavy metals, toxins, ammonia, nitrite, and nitrates from the water column; endlers nibble on the roots; and it is a nutrient-rich source of food for fishes.

The protein content is about 20-30%, they are believed to be the flowering plants with the highest protein content. Fiber: 15-25%. Fat: 2-8%. Other nutrients contained include Phosphorus, Potassium, Calcium, Zinc, and sodium. They absorb so much nitrite and nitrate that, while cleaning the duckweed out of the tank, you remove a huge percent of both.