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Bacopa sp. "Japan"

Bacopa sp. "Japan"

Dwarf and creeping Bacopa variety from Japan. Moderate growth rate, ideal for creating dense bushes in the midground or foreground.

Taxonomy
Class:Liliopsida
Order:Lamiales
Family:Plantaginaceae
Genus:Bacopa
Species:Bacopa sp. "Japan"

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Water Temperature

20 - 28 °C

pH Value

6 - 7.5

Water type

Freshwater

Light

Medium - High

CO2

Medium - High

Expected height

15 cm

Expected width

10 cm

GH

4 - 15 dGH

KH

2 - 10 dKH

Species description

This cultivar of Bacopa, designated "Japan" due to its popularity in the Japanese aquascaping market, finds its biological roots in the tropical and subtropical regions of East Asia. It naturally grows along the muddy banks of shallow ponds, rice paddies, and slow-moving streams. Adapted to seasonal water level changes, it transitions easily between emerged growth in wet soils and fully submerged conditions in home aquariums. Belonging to the family Plantaginaceae and the genus Bacopa, this specific plant has not yet been formally described at the species level, hence the placeholder Bacopa sp. "Japan".

Care, breeding and tankmates

This adaptable plant tolerates soft to moderately hard water (KH 2-12 dKH) with a pH range of 6.0 to 7.5. The ideal water temperature is between 15°C and 28°C. Sudden shifts in water parameters should be avoided to prevent stress and stunted growth. The main risk is self-shading if the bushes grow too dense, which leads to rotting of the lower stems. Soft leaves can be targeted by herbivorous snails or fish.

Geographic Origin and Distribution

This species originates from: East Asia (introduced via Japan).

Origin

East AsiaSelective breeding and cultivars

Plant profile

Placement
Midground

This versatile stem plant can be placed in the midground or background. Its creeping tendency allows it to be guided over hardscape or maintained as a low cluster. It is excellent for softening the edges of rocks.

Botanical form
Stem

It possesses somewhat smaller and more fragile leaves compared to standard Bacopa caroliniana. The leaves are ovate and light green, growing on flexible stems. Its graceful appearance makes it ideal for detailed midground work.

Growth
Medium

The growth rate is moderate, making it a very manageable plant for aquascaping. With CO2 and high light, it grows more vigorously and exhibits a more creeping habit. In lower-tech setups, it grows straight up but slower.

Substrate
Medium

Bacopa sp. "Japan" benefits significantly from a well-structured, moderately fertile substrate to support its delicate but vigorous rooting system. An active aqua soil helps maintain an acidic pH while providing a gentle, consistent supply of nutrients directly to the roots. Although it can adapt to sand or gravel, regular root feeding will prevent stunting and encourage bushier, lateral growth.

Column fertilization
Recommended

Regular dosing of a complete liquid fertilizer ensures optimal leaf size and color. It primarily relies on the water column for its nutrient needs. A lack of nutrients will result in stunted, pale growth.

Root fertilization
Recommended

While it feeds mainly from the water column, a good quality substrate will encourage stronger root growth. Root tabs can provide a slow-release nutrient source. They are not strictly necessary if column dosing is adequate.

Trimming
Regular

Frequent trimming is recommended to maintain a dense, bushy appearance. Trim the plant at nodes to encourage the growth of multiple side shoots. The trimmed tops can be used to expand the cluster.

Propagation
Cuttings

It is easily propagated through cuttings. Snip the healthy top portions and plant them into the substrate. Roots will form quickly at the nodes.

Sensitivity
Moderate

It can be delicate when initially planted and may experience slight melting. It does not tolerate severe shading well. Consistent CO2 levels and good flow are important to prevent algae.

Layout role
Midground, Foreground, Nano, group

It serves as an excellent midground transitional plant. Its bright green coloration and fine texture provide a refreshing contrast. It is highly valued for its natural, slightly wild look.

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.

Madagascar Bacopa

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Bacopa madagascariensis

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Bacopa serpyllifolia

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Water Milfoil Bacopa

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Bacopa caroliniana

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Bacopa salzmannii

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Bacopa sp. "Colorata"

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Bacopa crenata

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Bacopa lanigera

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Bacopa australis

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Limnophila repens "Mini"

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Limnophila cf. hippuridoides "Mini"

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Limnophila hippuridoides

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Recommended companions

Compatible cards from coherent ecosystems with matching parameters.

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Bucephalandra sp. "Black Leaf"

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Orange dwarf crayfish (CPO)
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Similar care

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Limnophila sp. "Sulawesi"

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Commelinaceae sp. "Green"

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Cordyline fruticosa

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Last updated: 06/16/2026
Bacopa sp. "Japan" Care Guide & Tank Setup | Atlarium