The Ceratopteris cornuta is a delicate fern plant for the background of the aquarium. It grows very quickly and is very easy to care for. The Ceratopteris cornuta is widely used in breeding aquariums. Labyrinth fish, for example, find a suitable place under their floating leaves on the water surface where they can feel comfortable and form their foam nests. Stronger lighting and CO₂ additions support the growth of the fern.