Fissidens nobilis Care Guide
Fissidens nobilis is a feathery freshwater moss from tropical Asia, grown attached to hardscape under low light in planted aquariums.
Compiled by Aquairi from published sources · Published · Updated
Overview
Fissidens nobilis is a moss of the family Fissidentaceae used as an epiphytic plant in freshwater aquariums. It is one of the larger Fissidens species, with leaves arranged in two rows that give the shoots a feather-like outline. It grows attached to rocks and wood and is reported to be uncommon in the hobby.
Taxonomy
- Family: Fissidentaceae
- Genus: Fissidens
- Scientific name: Fissidens nobilis
Origin
The species is native to warm-temperate to tropical Asia, with a range reported from India to Japan and extending to Indonesia and the Fiji Islands. Like other members of the genus, it occurs on rocks and wood in shaded, moist habitats.
Tank requirements
- Lighting: low
- CO2: not required, but supplementation supports growth
- Temperature: 18-26 °C (64-79 °F)
- pH: 5.5-7.5
- GH: 2-14 °dGH
- Maximum height: about 5 cm
- Placement: epiphyte, attached to hardscape
Planting and care
Fissidens nobilis rarely attaches by itself, so it is tied or glued to driftwood or stones until its rhizoids anchor. Growth is very slow. Good water movement and full macro- and micronutrient supplementation help maintain healthy cushions. Light pruning encourages branching, and loosened mats may need reattachment over time.
Propagation
Propagation is by division: portions of an established cushion are separated and reattached to new surfaces, where they continue to spread.
Difficulty
It is rated intermediate to difficult. Slow growth and the need for stable parameters, nutrient supply and reattachment make it less forgiving than common, fast-growing mosses.
Propagating Fissidens nobilis (Noble Fissidens)
Overview
Fissidens nobilis is one of the larger members of the genus Fissidens, an acrocarpous moss group of over 480 species whose leaves carry a vaginant lamina and are arranged in two ranks like a miniature feather. In the aquarium it grows attached to rocks and wood rather than rooted in substrate, and it is among the slowest-growing Fissidens species, demanding patience from the aquarist.
Propagation Method
Fissidens nobilis is propagated only by division: an established clump is split into smaller pieces, those pieces are spread thin and tied or wedged onto hardscape, and new growth emerges from them. Because the moss has no true roots, it anchors instead through rhizoids that gradually attach the fragments to the surface.
Step-by-Step
- Lift an established clump and gently pull off portions that have grown too thick.
- Cut larger strands into smaller pieces, roughly 0.5 to 1 cm, so they can be spread thinly.
- Distribute the fragments evenly and sparsely across the rock or driftwood; do not pile them up.
- Tie them down with thread or fishing line, or wedge them into cracks in the wood and rock with planting tweezers.
- Leave the moss undisturbed while rhizoids anchor it and bright green new shoots appear over the following months.
Conditions for Healthy Growth
- Low to moderate, subdued lighting; some aquarists report fuller growth under higher light.
- Temperature in the 18-26 degrees Celsius range, with cooler water often favoured.
- Soft to moderately hard water, pH around 5.5-7.5.
- Steady, gentle water flow to keep fronds clean and oxygenated.
- No CO2 is required for this low-demand epiphyte.
Maintenance
Keep the carpet thin: when patches become dense, pull off the overgrown bits, retie them onto bare areas, and they will spread to cover new ground. Periodic trimming prevents the lower layers from being shaded out, and gentle flow helps wash away detritus that would otherwise trap debris in the dense fronds.
Common Challenges
- Extremely slow growth: new sprouts may take months to appear, so patience is essential.
- Detached fragments drifting before rhizoids attach; secure pieces firmly until they anchor.
- Algae and detritus settling on dense mats in stagnant water; maintain flow and clean periodically.
- Browning or melt if light is too intense or water too warm for this subdued-light moss.