[2] It is found in freshwater lakes and bogs, usually associated with mosses and filamentous algae.

[3] It has been recorded in Europe, Cuba and possibly New Zealand.

Cells are borne in irregular spheroidal clusters of 2, 4, 8, or 16, not surrounded by a layer of mucilage.

[1] Coelastropsis reproduces asexually by producing autospores, where each spore develops into a cell of the new coenobium.

Flagellated stages and sexual reproduction have not been observed.