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AmphibianTerrestrialMedium

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Island Giant Treefrog

Cophyla occultans

A specialized microhylid frog (2.2 cm) native to Northwestern Madagascar (Nosy Be Island). Characterized by its miniature body size and a highly distinct loud metallic call and fossorial, leaf-litter dwelling habits.

Family
Microhylidae
Origin
Madagascar nord-occidentale (Isola di Nosy Be)
Origin
Tropical oceans and reefsAfrica and Madagascar
Tank use
Used in 0 tanks

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Species challenges
Water Temperature

22 °C - 28 °C

pH Value

n/a

Water type

Terrestrial

Humidity

70 % - 90 %

UVB

Low

Species description

Geographical Origin and Habitat: Native to Northwestern Madagascar (Nosy Be Island). It primarily occurs in remnant rainforest patches on Nosy Be Island and adjacent mainland. It lives mostly concealed within leaf litter or burrowed inside moist soils.

Taxonomy and Genetics: Belongs to the Microhylidae family, genus Cophyla. This group consists of narrow-mouthed frogs highly adapted to specific fossorial or semi-arboreal microhabitats.

Behavior and Habits: Primarily nocturnal and secretive. It spends the daytime hours buried under the substrate or hidden beneath leaf litter, emerging to forage and breed during heavy seasonal rains.

Morphology: Features a plump, rounded body reaching about 2.2 cm. Skin texture ranges from smooth to warty with cryptic colors. Males are smaller than females and exhibit distinct vocal sacs during the breeding season.

Care, breeding and tankmates

Terrarium Setup: Provide a horizontal terrarium with a deep (10-15 cm) layer of loose, damp substrate such as coconut fiber and sterile peat moss. Add cork bark hides, dry leaves, and flat shelters to create shaded spots.

Lighting and Heating: Maintain daytime temperatures around 26.0°C and night temperatures at 22.0°C. Provide a 12-hour light cycle; a low-intensity UVB source is recommended to support general health.

Humidity and Hydration: Maintain relative humidity between 70.0% and 90.0%. Mist regularly with dechlorinated water and supply a very shallow water dish to prevent drowning risks.

Feeding and Supplementation: Strictly insectivorous. Offer gutloaded crickets, roaches, fruit flies, and small worms. Dust prey with high-quality calcium and vitamin D3 twice a week to support skeletal structure.

Compatibility: Best kept in a species-specific setup. Small groups of similar size can cohabitate, avoiding competition or accidental cannibalism.

Health and Common Diseases: Highly susceptible to bacterial skin infections (red leg disease) if ventilation is poor or the substrate is soiled. Regularly check skin condition and hydration levels.

Amphibian profile

Diet
Insectivore
Humidity
70 % - 90 %
Day temperature
26 °C
Night temperature
22 °C
UVB
Low

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Licensed images linked to the species or, when marked, to the closest representative taxon.

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Last updated: 06/13/2026