Azolla caroliniana (Fairy Moss, Duckweed/Mosquito Fern)

Azolla caroliniana, commonly known as Fairy Moss or Duckweed/Mosquito Fern, is a small floating aquatic fern that forms dense mats on the surface of still or slow-moving water. It has small, bright green leaves that are connected in pairs and a reddish underside. This plant is often used in water gardens and aquariums to provide shade and shelter for fish and other aquatic life.