Ceratopteris Pteridioides is a type of aquatic fern that is also known as Water Sprite. It is a popular choice for aquarium enthusiasts because it is easy to care for and can help to control the growth of algae in the tank. Other synonyms for Ceratopteris Pteridioides include Indian Fern, Water Fern, and Water Horn Fern. These terms are used interchangeably to refer to this fern due to its appearance and habitat. Regardless of what name is used, this plant is a great addition to any aquarium and can add beauty and diversity to your underwater world.