Monosolenium tenerum

Species description

Care, breeding and tankmates

Plant profile

Placement

Foreground

Best tied to rocks, stones, or pieces of wood, or sandwiched between stainless steel mesh. It is typically used in the foreground or midground to create lush, low-lying bushes. Because it is heavier than water, it stays on the bottom but does not attach firmly to surfaces on its own.

Botanical form

liverwort

A unique liverwort that lacks true leaves, stems, or roots, consisting instead of a branching, ribbon-like green thallus. The thallus is semi-transparent, bright green, and somewhat brittle. It forms dense, heavy cushions that sink to the bottom of the aquarium.

Growth

Medium

Exhibits a moderate growth rate when provided with adequate light and nutrients. Under optimal conditions with CO2, it can grow surprisingly fast and quickly form large mounds. In lower light setups, it grows much slower and remains more compact.

Substrate

None

Monosolenium tenerum is a unique liverwort that lacks true roots, making substrate choice practically irrelevant. Because it is slightly heavier than water, it will naturally sink and form dense cushions on the aquarium floor, but it cannot be buried in soil or gravel. It is often tied to stones, mesh pads, or wood, where its delicate, translucent thallus can anchor itself lightly and absorb nutrients directly from the water column.

Column fertilization

Recommended

Relies entirely on the water column for its nutrient intake since it has no root system. Regular dosing of a comprehensive liquid fertilizer will ensure healthy, vigorous growth. Adequate water flow is necessary to keep the dense cushions free of detritus and well-supplied with nutrients.

Root fertilization

None

Completely unaffected by substrate fertilizers as it does not possess true roots. It absorbs nutrients directly through its thallus structure. Root tabs are of no use for this plant.

Trimming

Occasional

Pruning must be done carefully, as the plant is fragile and pieces can easily float away and infest the tank. It is best trimmed by gently pulling away clumps with tweezers or by carefully cutting with scissors and immediately siphoning the debris. Regular thinning prevents the bottom layers from dying off due to lack of light.

Propagation

Cuttings

Propagation is as simple as dividing the clump into smaller pieces. Every small fragment of the thallus is capable of growing into a new, full-sized cushion. Because of this, it is easy to spread throughout the tank, sometimes unintentionally.

Sensitivity

Moderate

Very brittle and easily broken by rough handling or boisterous fish. It does not attach well to hardscape on its own, so it must be securely tied down. It is susceptible to being choked by thread algae if water parameters are poor.

Layout role

group, Epiphyte, Foreground, Nano

Excellent for creating dense, bright green cushions in the foreground or midground. It is highly valued in aquascaping for softening the base of hardscapes and creating a natural, aged look. It provides an ideal hiding place for shrimp and small fish fry.