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Roundleaf Toothcup

Rotala rotundifolia · family Lythraceae

Roundleaf Toothcup (Rotala rotundifolia) — aquarium plant
Wikipedia / Various contributors / CC BY-SA
Light
High
CO₂
Helpful
Temperature
22–28 °C
pH
5–7.5
Hardness
1–12 °dGH
Growth rate
Fast
Height
up to 40 cm
Placement
Background
Root feeder
No

Pros and cons

  • Red palette breaks up an all-green tank
  • Slender stems form a 'forest' effect
  • Propagates from side shoots
  • Heavy macro-nutrient consumer
  • Red color needs CO₂ and bright light
  • Requires regular pruning
  • Without iron supplementation, grows smaller

Description

One of the most popular 'red' aquarium species. Under bright light, lower leaves and shoot tips turn pink-red.

Care

Bright light + CO₂ are required for the red coloration. Without them it stays green.

FAQ

Почему ротала не красная?
Недостаточно света и/или нет CO₂. Также нужно достаточно железа в подкормке.
Goldie editorial team — collective profile photo
AuthorGoldie Editorial

Goldie editorial team

Practising aquarists with a combined 30+ years of experience · Biologists and editors, fact-checking against FishBase and Seriously Fish · Every piece is reviewed by a qualified ichthyologist before publication

Goldie Science Board — collective scientific review panel
Reviewed byGoldie Science Board

Scientific board — ichthyologists and veterinarians

Ichthyologists and veterinarians with university degrees · Reference FishBase, Seriously Fish and peer-reviewed literature · Sign every reviewed article with their credentials shown

Sources

  1. Wikipedia: Rotala rotundifolia · Wikipedia · 2026-05-22