Encyclopaedia
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.
Share
Check out Bacopa sp. "Japan" on Atlarium
20 - 28 °C
6 - 7.5
Freshwater
Medium - High
Medium - High
15 cm
10 cm
4 - 15 dGH
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
Plant profile
- Placement
- Midground
- Botanical form
- Stem
- Growth
- Medium
- Substrate
- Medium
- Column fertilization
- Recommended
- Root fertilization
- Recommended
- Trimming
- Regular
- Propagation
- Cuttings
- Sensitivity
- Moderate
- Layout role
- Midground, Foreground, Nano, group
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.
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.
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.
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.
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.
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.
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.
It is easily propagated through cuttings. Snip the healthy top portions and plant them into the substrate. Roots will form quickly at the nodes.
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.
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.
Recommended companions
Compatible cards from coherent ecosystems with matching parameters.
Similar care
Cards with similar requirements, difficulty, habitat, and husbandry profile.









































