Zhangixalus prasinatus (common names: tributary flying frog, green treefrog, emerald green treefrog) is a species of frog in the family Rhacophoridae endemic to northern Taiwan. It has been observed between 400 and 600 meters above sea level.[1]
Z. prasinatus is the largest tree frog in Taiwan; the adult female frog can be 65mm to 77mm in snout-vent length.[2] The adult male frog is about 48mm to 63mm mm long. This frog is green in color with a yellow stripe on each side and a white belly. All toes have climbing disks and all four feet are webbed. Some individuals have spots.
It is known from Taiwan, where it has been observed between 400 and 600 meters above sea level. Its habitats are orchards, tea plantations, bamboo forests, shrublands, and forests in hilly areas. Its range includes at least one protected park: Hapen Nature Reserve. Breeding takes place in tree holes, but also in cisterns, buckets, or water tanks. It is threatened by habitat loss and degradation, specifically agriculture, grazing, urbanization, and changes in agriculture that involve increased use of pesticides. This species is known to live in several protected areas. Scientists believe it may be somewhat tolerant to alterations to its habitat.