Tags: Moss.
Riccia fluitans whose common name is crystalwort is an aquatic floating plant of the liverwort genus Riccia which is popular among aquarists as a retreat for young fry and is used in live-bearing tanks. It can be found floating in ponds and often forms thick mats on and under the water surface.It normally grows quickly at the surface. When kept about two to three inches below an ordinary fluorescent bulb or in a pond exposed to full sunlight it will form dense bright green mats.
