The glass frogs are frogs of the amphibian family Centrolenidae. While the general background coloration of most glass frogs is primarily lime green, the abdominal skin of some members of this family is transparent. The internal viscera, including the heart, liver, and gastrointestinal tract, are visible through the skin, hence the common name is given as glass frog.
What is the glass frog?
Glass frogs are generally small, ranging from 3 to 7.5 cm (1.2 to 3.0 in) length. They are green in color over most of their bodies, save for the skin along the lower surface of the body, which is transparent.
Two members of the glass-frog family reflect near-infrared light (700 to 900 nanometers) when examined by infrared color photography. Infrared reflectance may confer adaptive advantage to these arboreal frogs both in thermoregulation and infrared cryptic coloration.
The Centrolenidae are a diverse family, distributed from southern Mexico to Panama, and through the Andes from Venezuela and the island of Tobago to Bolivia, with some species in the Amazon and Orinoco River basins, the Guiana Shield region, southeastern Brazil, and northern Argentina.
Glass frogs are mostly arboreal. They live along rivers and streams during the breeding season, and are particularly diverse in montane cloud forests of Central and South America, although some species occur also in Amazon and Chocóan rainforest and semideciduous forests.
Image: Geronimo Serrano
Text: Wikipedia contributors. “Glass frog.” Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, 9 Oct. 2017. Web. 13 Oct. 2017.