Water Sprite (Ceratopteris thalictroides) – Fast-Growing, Versatile Fern for Beginner Aquariums
Water Sprite is a popular and extremely versatile freshwater plant known for its delicate, lace-like leaves and fast growth. It can be grown rooted in substrate or as a floating plant, making it ideal for a wide range of aquariums including community tanks, shrimp tanks, and fry grow-out setups.
As a fast nutrient absorber, Water Sprite helps control algae and improves water quality. Its dense foliage also provides excellent shelter for small fish and shrimp. This plant is very hardy, making it a great choice for beginners while still being beautiful enough for advanced aquascapes.
Easy
Peaceful (plant)
6–13 inches tall when rooted; larger when floating
Perennial with proper care
Thrives with liquid fertilizers; root tabs optional. CO₂ not required.
Minimum 10 gallons
Temperature: 68–82°F
pH: 6.0–7.5
Hardness: Soft to moderately hard
Excellent for shrimp, nano fish, and peaceful community tanks
Floats beautifully, creating shaded areas for shy fish
Fast grower that helps reduce nitrates and algae
Safe and ideal for fry, providing hiding spaces and microfauna
Floated Water Sprite grows faster and produces broader, bushier leaves
Can become large in high-light conditions; trim as needed
Breaks easily—plant cuttings will regrow into full plants
Avoid with plant-eating species like goldfish or large cichlids
