Hornwort (Ceratophyllum) is a popular freshwater aquarium plant known for its fast growth rate, ability to absorb excess nutrients, and low-maintenance requirements. Its feathery, bright green leaves provide a natural habitat for fish and other aquatic creatures, while also improving the water quality by absorbing carbon dioxide and releasing oxygen. However, Hornwort can overgrow and become invasive if not properly maintained. Overall, Hornwort is a practical and beneficial choice for both novice and experienced aquarists looking to create a natural-looking and healthy aquarium.