Water Sprite (Ceratopteris thalictroides) – jermack

Origin: Unknown
Usage: Background
CO2: Low
Light: Medium – High
Care: Easy
Growth Form: Rosette
Growth Rate: Fast
Height:  6 – 20”
Width: 3 – 10”
Temp: 64 – 86F

Ceratopteris thalictroides, commonly known as Water Sprite, is a versatile, fast-growing fern found in tropical regions around the world, often in shallow waters or rice paddies. It thrives both as a floating plant or planted in substrate, and is a popular choice for aquarists due to its ease of care and adaptability. In aquariums, Water Sprite quickly forms large, light green bushes and serves as a perfect background plant, especially in larger tanks. Its finely or coarsely pinnate leaves provide excellent cover for fish, particularly labyrinth fish and fry, which use it for nesting and shelter.

Water Sprite is known for its rapid growth, making it highly effective at absorbing excess nutrients from the water. Although CO2 injection is not necessary, this plant thrives with nutrient-rich soil and regular fertilization to support its robust growth. Whether floating or planted, its ability to improve water quality and provide a natural habitat for fish makes it a valuable addition to any aquarium.

In the wild, Water Sprite is considered an annual plant, but in aquariums, it can be cultivated for many years without issue. Its versatility and hardiness, combined with its attractive appearance, make it a popular choice for aquarists seeking a low-maintenance yet visually striking plant for their setups.