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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.

Taxonomy
Class:Liliopsida
Order:Lamiales
Family:Plantaginaceae
Genus:Callitriche
Species:Callitriche palustris agg.

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Water Temperature

4 - 26 °C

pH Value

5 - 7

Water type

Freshwater

Light

Medium to High

CO2

Low - High

Expected height

40 cm

Expected width

4 cm

KH

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

Europe, Mediterranean, and West AsiaNorth AmericaEast Asia

Plant profile

Placement
Midground

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.

Botanical form
Stem

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.

Growth
Fast

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.

Substrate
Medium
Column fertilization
Recommended

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.

Root fertilization
None

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
Occasional

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
Cuttings

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.

Sensitivity
high

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.

Layout role
Midground, Background

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.

Callitriche terrestris

Callitriche terrestris

Callitriche terrestris

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Bacopa sp. "Colorata"

Bacopa sp. "Colorata"

Bacopa sp. "Colorata"

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Bacopa australis

Bacopa australis

Bacopa australis

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Bacopa caroliniana

Bacopa caroliniana

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Bacopa salzmannii

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Limnophila heterophylla

Limnophila heterophylla

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Limnophila barteri

Limnophila barteri

Limnophila barteri

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Hydrotriche hottoniiflora

Hydrotriche hottoniiflora

Hydrotriche hottoniiflora

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Gratiola virginiana

Gratiola virginiana

Gratiola virginiana

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Gratiola viscidula

Gratiola viscidula

Gratiola viscidula

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Littorella uniflora

Littorella uniflora

Littorella uniflora

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Bacopa monnieri "Rundblättrig"

Bacopa monnieri "Rundblättrig"

Bacopa monnieri "Rundblättrig"

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Bacopa crenata

Bacopa crenata

Bacopa crenata

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Bacopa lanigera

Bacopa lanigera

Bacopa lanigera

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Limnophila rugosa

Limnophila rugosa

Limnophila rugosa

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Bacopa serpyllifolia

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Recommended companions

Compatible cards from coherent ecosystems with matching parameters.

Amblystegium serpens

Amblystegium serpens

Amblystegium serpens

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Aldrovanda vesiculosa

Aldrovanda vesiculosa

Aldrovanda vesiculosa

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Acorus gramineus

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Ammannia pedicellata

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Anubias barteri var. nana

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Orange dwarf crayfish (CPO)
Invertebrate

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Cambarellus patzcuarensis "Orange"

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Marimo Moss Ball

Marimo Moss Ball

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Montezuma dwarf crayfish
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Cambarellus montezumae

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Green babaulti shrimp
Invertebrate

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Caridina cf. babaulti "Green"

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Cabomba aquatica

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Ramshorn Snail
Invertebrate

Ramshorn Snail

Planorbella duryi

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Amblystegium riparium

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Amblystegium riparium

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Red Cabomba

Red Cabomba

Cabomba piauhyensis

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Cherry Shrimp
Invertebrate

Cherry Shrimp

Neocaridina davidi

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Anubias gracilis

Anubias gracilis

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Anubias barteri var. nana 'Petite' ('Bonsai')

Anubias barteri var. nana 'Petite' ('Bonsai')

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Similar care

Cards with similar requirements, difficulty, habitat, and husbandry profile.

Limnophila sp. "Broad"

Limnophila sp. "Broad"

Limnophila sp. "Broad"

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Dwarf Ambulia

Dwarf Ambulia

Limnophila sessiliflora

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Limnophila sp. "Sulawesi"

Limnophila sp. "Sulawesi"

Limnophila sp. "Sulawesi"

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Limnophila brownii

Limnophila brownii

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Bacopa sp. "Japan"

Bacopa sp. "Japan"

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Bacopa monnieri

Bacopa monnieri

Bacopa monnieri

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Ammannia latifolia

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Aromatic Limnophila

Aromatic Limnophila

Limnophila aromatica

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Gratiola officinalis

Gratiola officinalis

Gratiola officinalis

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Blyxa japonica var. alternifolia

Blyxa japonica var. alternifolia

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Limnophila cf. hippuridoides "Mini"

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Limnophila cf. hippuridoides "Mini"

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Bacopa monnieri "Rundblättrig"

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Aciotis acuminifolia

Aciotis acuminifolia

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Cabomba australis

Cabomba australis

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Limnophila aquatica

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Anubias gilletii

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Last updated: 06/16/2026
Callitriche palustris agg. Care Guide & Tank Setup | Atlarium