The redmosses genus group has replaced its ancestors the snowflake redmoss, starburst redmoss, ladder redmoss and other red photosynthetic microbes. They are the base of many marine ecosystems and live where ever there is sunlight and flowing water, be it the ocean, rivers or lakes. Like its ancestors it absorbs green light with its red chloroplasts and reproduces via mitosis.
Some have moving flagellum while others have ridged flagellum what have locked them into colonial shapes. They range in size from 1 millimeter individual cells to large colonies 30 millimeters wide. They grow in large numbers where nutrients are abundant such as in rivers, lakes and wetlands. When in the ocean they mostly grow where nutrients are brought up from the deep oceans or near river deltas. In the autumn the major "blooms" occur which tint the water a red hue. While some can move a little most just save energy by flowing with the currents.