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Plant appearance can vary with lighting, nutrients, CO₂, and whether it is grown submerged or emersed.
easymedium lightNo CO2fast growthfloating
Amazon Frogbit
Limnobium laevigatum
Amazon Frogbit is a floating plant with rosettes of rounded leaves and long trailing roots that provide excellent cover for surface fish, fry, and invertebrates. It grows fast and can cover a tank surface quickly. Very effective at nutrient uptake.
Evidence: verifiedConfidence: high
Care at a glance
Water parameters
Beginner guidance
Roots provide cover and biofilm for shrimp and fry. Trim regularly so it does not block all light. Needs surface agitation to be gentle, strong spray bars will push it around and stunt growth. Good for bettas and shy surface fish.
Cautions
- Can block light completely to submerged plants if unchecked.
Sources
- Limnobium laevigatum. Wikipedia — Species overview: South American origin, floating rosette habit, and aquarium use as surface cover.
- Limnobium laevigatum. Flowgrow — Light requirements, growth rate, and shading effect on submerged plants.
Fish whose water overlaps
Peaceful freshwater species with overlapping temperature and pH — still run a pair check for the real mix.
Similar plants
- Java Mosseasy · low light · no CO2
- Anubiaseasy · low light · no CO2
- Java Ferneasy · low light · no CO2
- Amazon Swordeasy · medium light · no CO2
- Hornworteasy · low light · no CO2
- Water Wisteriaeasy · medium light · no CO2
Plan the tank around this plant
Set a 20L+ footprint, then verify livestock before you buy Amazon Frogbit.
Tank hubs: 30L
Related plant guides
Easy beginner aquarium plantsPlants that grow without CO2Fast-growing aquarium plants
Common questions about Amazon Frogbit
- Does Amazon Frogbit need CO2?
- No. Amazon Frogbit grows in low-tech tanks without CO2 injection or liquid carbon supplementation.
- What light does Amazon Frogbit need?
- Amazon Frogbit is a medium-light plant. Most modern aquarium LEDs cover this. Anything sold as planted-tank-ready works. The stock hood on a basic shop tank usually does not.
- Is Amazon Frogbit beginner-friendly?
- Amazon Frogbit is rated easy for difficulty. Roots provide cover and biofilm for shrimp and fry. Trim regularly so it does not block all light. Needs surface agitation to be gentle, strong spray bars will push it around and stunt growth. Good for bettas and shy surface fish.
- Is Amazon Frogbit safe for shrimp?
- Yes. Amazon Frogbit is safe in shrimp tanks. The usual quarantine still applies: any plant from a commercial nursery should be soaked and rinsed first to flush copper and pesticide residue.