

US Fissidens Moss, scientifically known as Fissidens fontanus and commonly referred to as Phoenix Moss, is a distinctive aquatic moss native to North America. Renowned for its feather-like, deep green fronds, this moss forms elegant, dome-shaped cushions when attached to hardscape elements like driftwood and rocks. Its unique texture and growth pattern make it a sought-after choice for aquascaping enthusiasts aiming to create serene, naturalistic underwater landscapes.
Scientific Name: Fissidens fontanus
Common Names: US Fissidens Moss, Phoenix Moss, Water Pocket Moss
Origin: North America
Growth Habit: Slow-growing, forming compact, dome-shaped cushions
Leaf Characteristics: Delicate, feather-like fronds with a rich green hue
Lighting Requirements: Low to moderate intensity
CO₂ Requirement: Not essential; benefits from supplementation
Placement: Foreground, midground, or attached to hardscape
Water Parameters:
Temperature: 15–25°C (59–77°F)
pH Level: 6.0–7.5
Hardness: Soft to moderately hard water.
Aesthetic Appeal: Adds a lush, textured appearance to aquascapes with its unique frond structure.
Versatility: Ideal for various aquascaping styles, including nature and Iwagumi layouts.
Ease of Care: Low maintenance requirements make it suitable for both beginners and seasoned aquarists.
Habitat Enhancement: Provides shelter and breeding grounds for small fish and invertebrates.
Water Quality Improvement: Assists in nutrient absorption, contributing to a balanced aquarium ecosystem.
Lighting: Thrives under low to moderate lighting; excessive light may promote algae growth.
CO₂ and Fertilization: While not mandatory, CO₂ supplementation and regular dosing with micronutrients can enhance growth and vitality.
Attachment: Secure to hardscape elements using fine thread or aquarium-safe adhesive until it naturally anchors itself.
Water Flow: Prefers gentle water movement to prevent debris accumulation on fronds.
Propagation: Easily propagated by dividing established clumps and reattaching them to new surfaces.
Can US Fissidens Moss thrive without CO₂ supplementation?
Yes, it can grow without CO₂, but supplementation enhances growth and frond density.
How does US Fissidens Moss attach to surfaces?
It uses rhizoids—fine, hair-like structures—to anchor itself to hardscape elements.
Is US Fissidens Moss suitable for beginners?
Absolutely. Its adaptability and low maintenance make it ideal for novice aquarists.
How often should I trim US Fissidens Moss?
Trim as needed to maintain desired shape and prevent overgrowth.
Can it be grown emersed?
While primarily aquatic, it can adapt to emersed conditions in high-humidity environments.
Thanks for subscribing!
This email has been registered!