Riccardia chamedryfolia (Coral Moss) "submersed"

Riccardia chamedryfolia — Mini Pellia / Coral Moss

One of the most sought-after aquatic mosses in the planted tank hobby, Riccardia chamedryfolia — commonly known as Mini Pellia or Coral Moss — is prized for its dense, branching texture and rich emerald-green colour. Unlike true mosses, Riccardia is a liverwort, growing in compact, coral-like tufts that attach beautifully to hardscape. A favourite for iwagumi layouts, nano tanks, and detailed aquascapes where fine texture and depth are essential.

Plant Profile

• Scientific Name: Riccardia chamedryfolia
• Common Names: Mini Pellia, Coral Moss
• Type: Liverwort (aquatic)
• Origin: Asia
• Growth Rate: Slow
• Placement: Foreground to midground; ideal for hardscape attachment
• Difficulty: Moderate
• CO₂: Recommended for best growth and colour
• Lighting: Low to medium

Water Parameters

• Temperature: 18 – 25°C (64 – 78°F)
• pH: 6.5 – 7.2
• gH: 3 – 10
• kH: 1 – 2
• TDS: 100 – 300 ppm

Care & Placement

Riccardia grows best when tied or glued to rocks, driftwood, or mesh using thread or aquarium-safe gel adhesive. It does not root into substrate and should not be buried. Growth is slow but steady under stable conditions — patience rewards with a lush, textured carpet across hardscape surfaces.

• Attachment: Tie to hardscape with cotton thread or use gel-type cyanoacrylate adhesive
• Trimming: Trim regularly to maintain shape and prevent shading of lower growth
• CO₂: Injection significantly improves growth rate and colour intensity
• Fertilisation: Benefits from liquid micronutrient dosing; low demand overall
• Algae sensitivity: Slow growth makes it susceptible to algae — maintain stable parameters and good flow

Aquascape Use

Riccardia is a staple in high-detail aquascapes. Its fine, branching structure adds natural depth and contrast when draped over stones or wood. Particularly effective in nano tanks, shrimp biotopes, and Nature Aquarium-style layouts where texture and scale are critical design elements.