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Blyxa cf. vietii

Blyxa cf. vietii

Elegant grassy stem plant with thin lanceolate leaves. Ideal for midground placement, moderate growth, requires rich nutrients and CO2.

Taxonomy
Class:Liliopsida
Order:Alismatales
Family:Hydrocharitaceae
Genus:Blyxa
Species:Blyxa cf. vietii

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Water Temperature

22 - 28 °C

pH Value

5.5 - 7

Water type

Freshwater

Light

High

CO2

Medium - High

Expected height

15 cm

Expected width

10 cm

GH

4 - 12 dGH

KH

2 - 8 dKH

Species description

Blyxa cf. vietii is a grassy aquatic plant native to Southeast Asia, particularly Vietnam and surrounding regions. In its natural habitat, it grows fully submerged in clean, warm, slow-flowing forest streams, rivers, and shallow pools. It typically forms dense grassy meadows in sunlit areas where the substrate is rich in organic mud and iron-bearing sediments. Belonging to the family Hydrocharitaceae and the genus Blyxa, the identifier "cf." (confer) indicates that the plant is provisionally classified as vietii pending definitive taxonomic review.

Care, breeding and tankmates

Prefers soft to moderately hard water with a KH range of 2 to 8 dKH and a slightly acidic to neutral pH (6.0 - 7.2). It is sensitive to excessive nitrate and phosphate accumulation, requiring clean, well-filtered water. The recommended temperature range is 18°C to 28°C. Iron deficiency is the main risk, leading to pale or translucent leaves. Insufficient CO2 or lighting will cause the base of the plant to rot.

Geographic Origin and Distribution

This species originates from: Southeast Asia.

Origin

South and Southeast Asia

Plant profile

Placement
Midground

This plant is an excellent choice for the midground or even the foreground in larger aquariums. It forms dense, low-growing grassy bushes that look very natural among rocks and wood. It can also be used to create thick streets in Dutch-style layouts.

Botanical form
Rosette

It grows as a compact rosette with relatively short, stiff, and narrow leaves. The leaves are typically a vibrant light green. It is generally smaller and more rigid in appearance than Blyxa japonica.

Growth
Medium

Under good conditions, its growth rate is moderate, slowly spreading to form a dense clump. It is less aggressive in its growth than some stem plants, making it easier to manage. In lower light, its growth slows considerably.

Substrate
High

Blyxa cf. vietii shares the voracious root-feeding habits of its genus, requiring a thick, fertile substrate to flourish. An active aqua soil layer of at least two inches is recommended to properly anchor the plant and deliver a constant stream of essential minerals. Regular addition of root tabs is highly beneficial in mature setups to prevent substrate depletion and maintain its robust, grassy growth.

Column fertilization
Recommended

Regular dosing of a complete liquid fertilizer provides the necessary trace elements. While it feeds heavily from the roots, it also absorbs nutrients from the water column. Good water flow ensures nutrients reach all parts of the dense bush.

Root fertilization
Recommended

A fertile, soil-based substrate or the use of root tabs is highly recommended for optimal health. It develops a strong root system and relies on the substrate for a significant portion of its nutrition. A rich substrate encourages it to form thicker clumps.

Trimming
Occasional

It rarely requires extensive trimming. Maintenance usually involves thinning out the clump if it becomes too dense or removing any older leaves. If the bush becomes too large, it can be uprooted, divided, and replanted.

Propagation
Division

Propagation is straightforward and occurs by dividing the dense clump. Carefully uproot the plant and separate the individual rosettes, ensuring each has a healthy root system. Replant the divisions slightly spaced apart.

Sensitivity
Moderate

It is moderately hardy but can be sensitive to sudden changes in water parameters or significant drops in CO2. It does not handle severe shading well, which can cause rotting. It is relatively resistant to algae if healthy.

Layout role
Midground, group

It functions perfectly as a textural midground plant, providing a transition between low foreground carpets and taller stem plants. Its stiff, grassy texture offers excellent contrast against rounded leaves. It is a staple in nature aquarium layouts.

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.

Blyxa alternifolia

Blyxa alternifolia

Blyxa alternifolia

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Blyxa aubertii

Blyxa aubertii

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Blyxa aubertii "Red"

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Blyxa japonica var. alternifolia

Blyxa japonica var. alternifolia

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Blyxa japonica var. japonica

Blyxa japonica var. japonica

Blyxa japonica var. japonica

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Last updated: 06/16/2026