Care Guide

Family Name: Lythraceae

Rotala Macrandra Narrow Leaf

Advanced difficultyOut of Season

Care at a Glance

Lighting

Moderate to intense

Growth Rate

Fast under good conditions

Growth Form

Stem

Placement

Background, or mid-ground with regular trimming

True Aquatic

Yes

Available As

Bunch

About This Plant

Rotala macrandra “Narrow leaf” is is very similar in growth demands to the “normal” Rotala macrandra . This plant is very variable in nature, an Narrow leaf” form grown by Florida Aquatic Nurseries gives aquarists another leaf form in a brightly colored stem to work with in their aquascape. Rotala macrandra “Narrow leaf” demands at least moderate light levels and it must have supplemental CO2 and good nutrition or it will be prone to melting, and will never look its best. Under good conditions, however, the plant is breath-taking and a fast grower.

About the Rotala Genus

Family — Lythraceae

Rotala are slender stem plants in the Lythraceae family, used as background fillers and color accents. Most species respond dramatically to light intensity, expressing yellow, orange, pink, or red tones under high light and CO2 enrichment.

Quick-Reference Details

Common name: Family Name: Lythraceae
Scientific name: Rotala Macrandra Narrow Leaf
Family: Lythraceae
Native to: Southern India
Difficulty: Advanced
Requirements: Demanding supplemental CO2 and good nutrient support
Lighting: Moderate to intense
Growth rate: Fast under good conditions
Growth form: Stem
Placement: Background, or mid-ground with regular trimming
True aquatic: Yes
Available as: Bunch

Difficulty — Advanced

Performs best with strong lighting, CO2 supplementation, and stable water parameters. Not recommended as a first plant.

CO2 & Fertilization

CO2 supplementation is recommended for best growth and color. Liquid carbon (Easy Carbon, Excel) is a workable substitute, though pressurized CO2 produces the strongest results.

Tank Size & Setup

Best in tanks 20 gallons or larger so background stems have room to grow up and be trimmed without overtaking the foreground.

Aquascaping & Placement

Place in the midground between foreground carpets and tall background stems. The structure adds visual depth and shelters small fish and shrimp. Trim and replant the tops every 3-4 weeks. The new growth tips hold the best color and form, while lower stems eventually need replacing.

Tank-Mate Compatibility

Compatible with the full range of community-tank species — tetras, rasboras, livebearers, corydoras, and most other peaceful freshwater fish do not damage the foliage.

Pro Tips for Growing Family Name: Lythraceae

1Top-prune (cut and replant tops) to maintain color — the new growth tips hold the strongest color.
2More light + CO2 = more red. Without those, expect a green or peach-pink color expression.
3Plant stems individually with ~1 cm spacing; clumped stems shade each other and the inner stems die back.

Common Care Issues

Outgrowing the tank

Plan to trim every 1-2 weeks. Skipping trims lets the plant shade out neighbors and trap detritus that fouls water quality.

Slow initial growth

Most aquarium plants pause for 2-4 weeks after planting while they convert from their nursery-grown emersed form to fully submerged growth. New leaves that emerge underwater will look thinner and slightly different — this is the plant adapting, not a problem.

Frequently Asked Questions

How much light does Family Name: Lythraceae need?

Family Name: Lythraceae (Rotala Macrandra Narrow Leaf) prefers moderate to intense lighting. A standard planted-tank LED fixture run 7-9 hours a day is typical.

Does Family Name: Lythraceae need CO2?

CO2 supplementation is recommended for best growth and color. Liquid carbon (Easy Carbon, Excel) is a workable substitute, though pressurized CO2 produces the strongest results.

Is Family Name: Lythraceae good for beginners?

Family Name: Lythraceae is rated advanced-level. Performs best with strong lighting, CO2 supplementation, and stable water parameters. Not recommended as a first plant.

How fast does Family Name: Lythraceae grow?

Growth rate is fast under good conditions. Expect to trim every 1-2 weeks once established.

What fish and invertebrates are compatible with Family Name: Lythraceae?

Compatible with the full range of community-tank species — tetras, rasboras, livebearers, corydoras, and most other peaceful freshwater fish do not damage the foliage.

Available to Purchase

Family Name: Lythraceae — $19.99

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