Ceratophyllum demersum (hornwort)
The Hornwort – Ceratophyllum demersum – also known as Coontail, is a floating aquatic plant which has no roots. It can be potted or buried in gravel where it will develop some root-like organs called rhizoids. It is a good plant for beginners as it is cheap, fast growing, and doesn’t require much light and care. However, be careful while manipulating the plant as it has brittle stems. While planting your hornwort, it would be wise not to place it near the filter input. Part of the plant might get sucked into the filter as the plant grows. It grows well at a temperature of 4-25 ° C (39 -77 ° F) and at a pH  between 6 and 8.

Hornwort can be kept with most of the tropical and coldwater fish, even with goldfish – goldfish won’t eat the plant. This plant can also be used in bare bottom tanks or breeding tanks of livebearers such as guppies and platies where the fry get a place to hide.
Ceratophyllum demersum (hornwort)
Taking the advantage that the hornwort is a fast growing plant, it can be used in a newly set up tank to absorb the nutrients and prevent a bloom of unwanted algae.

Hornwort can be propagated through stem cuttings or side shoots. Merely snipping off a piece of the plant will yield you a new little plant. The stems of the hornwort multiply themselves quite readily, especially when they have reached the surface of water.

Photo by: Eponine01, Ramsvella.