This vegetation type is dominated by Ceratophyllum demersum, a submerged aquatic macrophyte, the morphology of which is variable depending on the degree of habitat shading and the type of sediment on the bottom. It occurs in shallow water bodies with still or slowly running, eutrophic to hypertrophic water, e.g. in small fishponds, fish-storage ponds, oxbows, channels and flooded sand pits. Due to its ability to grow in turbid water, it tends to spread in habitats affected by anthropogenic eutrophication. It is common across the lowland and colline areas of the Czech Republic.