Hygrophila lancea 'Araguaia'

08 October 2026

Hygrophila lancea 'Araguaia' is a narrow-leaved stem plant valued for its green to reddish-brown foliage and upright, branching growth. It is commonly sold under this name, although the identity and relationship of the aquarium form to formally described Hygrophila lancea should be treated cautiously. With strong light, adequate nutrients and carbon dioxide, it develops deeper coloration and compact growth. Regular trimming encourages side shoots and helps maintain a dense group in the middle or rear of an aquarium.

Identification

This aquarium plant is traded as Hygrophila lancea 'Araguaia' and is also encountered in the hobby as Hygrophila sp. 'Araguaia'. It forms slender stems with opposite, lance-shaped leaves that may range from green to bronze or reddish brown. Aquarium trade naming is not always consistent, so a definitive identification from photographs alone is not possible.

Planting

Remove the rock wool and separate the tissue-culture material into several small portions. Plant individual stems or small groups in nutrient-bearing substrate, leaving the lower leaves above the surface. Space the stems so water can circulate around them and new shoots have room to develop.

Light and carbon

Use medium to high aquarium lighting for compact growth and stronger red-brown coloration. Carbon dioxide injection is beneficial, particularly in brightly lit aquariums, but stable light, carbon availability and nutrient supply are more important than brief increases in any single parameter.

Fertilization and water quality

Provide a complete supply of nitrogen, phosphorus, potassium and trace elements, adjusting dosing to plant growth and water tests. A clean, stable aquarium with regular maintenance reduces algae on the narrow leaves. Avoid burying the stem too deeply, since trapped debris can promote damage at the base.

Pruning and propagation

Trim the upper portions when stems become too tall or lose their lower leaves. Replant healthy cuttings directly into the substrate; the remaining rooted stems commonly produce side shoots. Repeated trimming can create a fuller group, while removing weak or shaded stems improves circulation and light penetration.

Plant info

Colors: Green, Red, Dark green
Difficulty: Medium
Origin: South America
Usage: Middleground
Type: Stem plant
Growth rate: Fast
Height: 10-30 cm
Light demand: High
CO2: Medium

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