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Callitriche palustris agg.
Callitriche palustris agg.
Callitriche palustris agg.: delicate stem plant native to the northern hemisphere, ideal for temperate or coldwater tanks.
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4 - 26 °C
5 - 7
Freshwater
Medium to High
Low - High
40 cm
4 cm
0 - 21 dKH
Species description
Distributed across temperate regions of the Northern Hemisphere, including Europe, northern Asia, and North America. It grows in stagnant or slow-moving waters such as ditches, marshes, ponds, and shallow lake margins, often forming dense submerged or floating mats. Belongs to the Plantaginaceae family (formerly Callitrichaceae) and the genus Callitriche. The abbreviation 'agg.' (aggregate) refers to a group of closely related and morphologically nearly identical species that are difficult to distinguish without microscopic examination of the seeds. Features very thin, fragile, and thread-like stems that grow vertically.
Care, breeding and tankmates
Prefers cool to cold water (4-26°C), failing to tolerate prolonged summer heat above 26°C. The ideal pH range is 5.0 to 7.0, with a broad tolerance for water hardness (KH 0-21). Highly sensitive to elevated temperatures, which lead to rapid melting of the stems. Because of its fragile nature, it can be easily damaged or uprooted by larger herbivorous or digging fish.
Geographic Origin and Distribution
This species originates from: Europe, Northern Asia, North America.
Origin
Plant profile
- Placement
- Midground
- Botanical form
- Stem
- Growth
- Fast
- Substrate
- Medium
- Column fertilization
- Recommended
- Root fertilization
- None
- Trimming
- Occasional
- Propagation
- Cuttings
- Sensitivity
- high
- Layout role
- Midground, Background
Suitable for various positions depending on the aquascape design, usually midground or background. Its unique texture adds visual interest and contrast when grouped with other species. Make sure it has enough room to grow without being entirely shaded.
The Callitriche palustris agg. exhibits a distinctive morphological structure that stands out in planted tanks. Its leaf shape and stem arrangement make it highly recognizable. Under good light, its colors become more pronounced and vibrant.
Grows at a moderate to fast rate depending on the light and CO2 levels available. In high-tech tanks, it may require frequent trimming to keep it in shape. In low-tech setups, it will grow much slower but remain healthy.
Absorbs most of its required nutrients directly from the water column. Liquid fertilizers are highly effective and should be dosed regularly. Keeping a consistent nutrient level is key to avoiding deficiency symptoms.
While it can survive without it, a nutrient-rich substrate can offer a good backup nutrient source. Root tabs are beneficial if the substrate is old or inert. However, water column dosing should remain the primary focus.
Trimming is straightforward; simply cut the stems or leaves to the desired length. Regular pruning encourages bushier, denser growth and prevents the plant from taking over the tank. Replant the healthy trimmings if you wish to expand its footprint.
Propagation is very simple by dividing the plant or replanting cuttings. The cuttings quickly develop roots and establish themselves in the substrate. Ensure the new cuttings receive adequate light to encourage fast rooting.
Generally robust but can melt if water parameters swing drastically. It prefers stable conditions and clean water with good flow. Algae can be an issue if organic waste is allowed to accumulate on its delicate leaves.
Excellent for creating natural-looking thickets or adding a touch of wildness to the aquascape. It bridges the gap between different plant groups beautifully. Its unique texture provides a great contrast to broad-leaved plants.
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
Related species
Recommendations grouped by close relatives, companion choices, and similar care.
Variants and close relatives
Same atlas type, nearby scientific identity, genus, or family.
Recommended companions
Compatible cards from coherent ecosystems with matching parameters.
Similar care
Cards with similar requirements, difficulty, habitat, and husbandry profile.






































