Amazon Leaf Fish

Monocirrhus polyacanthus

Amazon Leaf Fish (Monocirrhus polyacanthus) — Varies care, Peaceful, under Other. Minimum tank in the app: 30 US gal min; aim for 73–84°F and pH 6.5–7.5. The Amazon Leaf Fish is fascinating for its unique camouflage and hunting style, making it ideal for aquarists who appreciate behavioral subtleties.

Amazon Leaf Fish (Monocirrhus polyacanthus) in a planted freshwater aquarium
Care levelVaries
TemperamentPeaceful
Min tank size30 US gal min
pH range6.5–7.5
Temperature73–84°F
Max size3.5 in (9.0 cm)
Captive lifespan5–10 years
SchoolingNo

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

South America

  • South America

Regional colours match the stocking calculator’s origin map.

Amazon Leaf Fish Tank Setup

Create a visually complex habitat with plenty of plants and driftwood to mimic their natural environment, fostering security and encouraging natural behaviors. Ensure moderate water flow and a soft substrate to facilitate foraging. Lighting should be subdued to enhance their camouflage and comfort.

What Do Amazon Leaf Fishs Eat?

While omnivorous, these fish prefer a varied diet of live and frozen foods, which can lead to competitive feeding scenarios if not managed. Ensure regular feeding intervals to maintain health and vibrancy, as colors may dull if they are consistently outcompeted.

Amazon Leaf Fish Tank Mates

Ideal companions include similarly sized, non-aggressive fish that occupy different swim zones, such as small tetras or rasboras. Avoid pairing with overly boisterous species that might outcompete them for food. Intraspecies aggression is minimal, allowing solitary keeping without issues.

Are Amazon Leaf Fishs Good for Beginners?

Care demand varies with setup and individual fish; use the numbers above as your baseline. Aquarists often underestimate the importance of hiding spots, leading to stressed fish that refuse to eat. sudden changes in water parameters can trigger health issues, as these fish are sensitive to fluctuations, particularly in pH and temperature.

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