Hyalinobatrachium colymbiphyllum, also called the bare-hearted glass frog, plantation glass frog and the cricket glass frog, is a species of frog in the family Centrolenidae that is found in moist forests, often near streams, in countries in Central America and South America. They are small, green frogs with many similarities to other glass frogs, however, they have the most transparent undersides of any glass frogs. Their transparent undersides make them ideal bio-indicators for how global warming and other threats are affecting the animals in the forests. Characteristics Bare-hearted glass frogs are similar in features to most glass frogs but have their own distinct characteristics. Like most glass frogs, they are small and green with yellow spots and transparent undersides. The transparent undersides are the main feature of most glass frogs, but the bare-hearted glass frog has the clearest underside, allowing almost full visibility of their internal organs. Their transparent skin also makes them difficult to see, as well as their size. They are very small, with male frogs being long and females long. Other distinct characteristics of bare-hearted glass frogs are their forward-facing golden eyes and nostrils raised from their heads. They spend time moving throughout the forests and streams, their front fingers being less webbed and more isolated, while their back feet are heavily webbed, allow them mobility in trees and in water. Bare-hearted glass frog tadpoles are very small, less than . They are brown with light undersides and have long bodies with pointed tails for swimming while they mature in the streams. Most Amphibians, including the glass frog, have innate embryonic resistance and defenses hat are reflecting in their social and environmental structures. It is shown that a frog's skin is a great host for microbe community diversity and may vary depending on horizontal (conspecifics), environmental, or vertical transmissions. Habitat The bare-hearted glass frog is found in Honduras (Olancho Department), central and southeastern Costa Rica, Panama, and western Colombia along the western slopes of Cordillera Occidental. They live near streams, or other bodies of water, that are surrounded by rainforests. During breeding season, they live beside or directly above streams on leaves and bush that dangle over the water in order for eggs to hatch into the stream. The Costa Rican Amphibian Research Center (CRARC), founded by Brian Kubicki, has found that they live higher in trees or near waterfalls while not in breeding season. There is