Facts about Glass Frogs

1. 07

   Glass frogs belong to the family Centrolenidae, which contains over 150 described species distributed across Central and South America.

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2. 06

   Nuptial pads on male glass frogs' thumbs secrete adhesive mucus during breeding season, allowing them to grip females firmly during amplexus.

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3. 05

   Their bright green coloration comes from yellow and blue pigments layered in skin cells, which combine to create the vibrant hue visible in many glass frog species.

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4. 04

   Most glass frog species measure between 20 and 30 millimeters in length, making them among the smallest tree frogs in their rainforest habitats.

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5. 03

   Reflexes in glass frogs allow them to flatten their bodies and press against leaf surfaces within milliseconds when threatened by predators.

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6. 02

   Central American glass frogs lay their eggs on leaves above streams, and males guard the clutches for up to 15 days until tadpoles hatch and drop into the water below.

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7. 01

   Transparent skin on the belly of glass frogs allows observers to see their beating hearts and eggs through the amphibians' bodies.

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