Plant atlas

Geographical Origin and Habitat: Fontinalis hypnoides is widely distributed in the temperate regions of the Northern Hemisphere, including Europe, northern Asia, and North America. It inhabits clean and stable freshwater habitats such as clear lakes, spring-fed ponds, and slow-flowing canals, growing attached to hard substrates or submerged branches sheltered from strong wave action.

Taxonomy & Genetics: It belongs to the Fontinalaceae family and is related to the more common Fontinalis antipyretica. At a genetic and structural level, it stands out for its significantly thinner, softer, and more elastic fronds, which allow it to colonize slower-flowing water environments compared to other species of the same genus.

Physical Structure: It features thin, flexible, and densely branched stems that develop horizontally or in an umbrella shape over surfaces. The leaves are densely arranged along the branches, are tiny, elongated, and have an extremely soft and delicate texture. It lacks roots and secures itself to supports using small rhizoids.

Color & Texture: It is distinguished by a glossy and bright light green color, almost golden under good lighting. The visual texture is very fine, feathery, and airy, creating a soft and natural effect particularly suitable for nano aquariums or for refining layout details.

Lighting & CO2: Prefers low to moderate lighting; it also tolerates more intense light if combined with a good supply of CO2, which accelerates its otherwise slow growth and prevents the accumulation of algal films.

Nutrition & Substrate: As an epiphytic moss, it derives all nutrients directly from the

Water Chemistry: Prefers cool water with stable temperatures between 4 and 24 °C (suffers above 25 °C). Requires soft water, preferably with a slightly acidic to neutral pH (5.0-7.0) and a high concentration of dissolved oxygen.

Space Management & Placement: Place in the midground or foreground of the layout, anchored with fishing line or special glue to small stones, roots, or thin branches of the hardscape. It is ideal for enhancing details in Ryuboku-style layouts.

Pruning: Pruning is done by trimming the stems with sharp scissors to limit expansion and maintain compactness. The pruned tops can be reused by tying them to new supports to propagate the colony.

Risks & Diseases: Summer overheating is the main threat: high temperatures cause rapid browning of the fronds and the death of the moss. In addition, due to the fineness of the stems, it tends to accumulate suspended particulate matter, requiring regular water changes.