Granular Glass Frog

Geographical Origin and Habitat: Inhabits the humid, tropical primary forests and mountain streams of Costa Rica, Panama, Nicaragua, and Honduras. They are strictly arboreal, living in dense vegetation and broad leaves directly hanging over fast-flowing, oxygen-rich mountain rivers.

Taxonomy and Genetics: A member of the family Centrolenidae. It has a tiny, delicate body (2.5-3.5 cm) with long limbs and large adhesive toe pads. The dorsal skin is olive-green or emerald green with a distinctive grainy, rough texture (granulosa). Its belly is completely transparent, revealing the heart, stomach, and liver.

Behavior and Habits: Secretive, nocturnal, and arboreal. During the day, they remain completely motionless under leaves, utilizing their translucent body to blend in. At night, they active jump and climb among branches. Males call with a sharp "tick-tick" sound from overhanging branches to attract females during the rainy season.

Morphology: Females are slightly larger and rounder, especially during the breeding season when their mature green eggs can be seen through their transparent flanks. Males are smaller, more slender, and call actively.

Terrarium Setup: Requires a vertical, tall terrarium or paludarium (minimum 45x45x60 cm) representing a tropical rainforest canopy. Furnish with branches and large-leafed live plants like Philodendron, Monstera, or Anthurium for daytime resting. Include a clean, deep water section with slow current.

Lighting and Heating: Prefers warm, humid tropical temperatures between 25 and 27°C. Avoid excessive heat; temperatures above 28°C can cause fatal heat stress. Provide low-intensity lighting with a 5% UVB tube to prevent metabolic bone disease.

Humidity and Hydration: Maintain high humidity levels (80-90%) with excellent ventilation. Stagnant air and wet, dirty conditions are highly lethal, causing skin rot and red leg syndrome. Mist daily with clean, declorinated or reverse osmosis water.

Feeding and Supplementation: Strictly insectivorous. Feed on very small live insects such as flightless fruit flies (Drosophila hydei), micro-crickets, and springtails. Supplement their food three times a week with a quality calcium and vitamin D3 powder.

Compatibility: Peaceful and gregarious. They can be housed in small groups of their own species if the terrarium is large enough. Do not house them with other species or larger frogs that could easily consume them.

Health and Common Diseases: Extremely delicate. Never handle them with bare hands as skin oils and soap residues are toxic. Snout rubbing can occur if the frog jumps against glass in panic, leading to fatal infections. Require meticulous hygiene.