The endangered Alpine Tree Frog is a relatively small frog, growing to about 3 cm long. Coloration is highly variable; there are green, brown and grey forms with a black stripe from the nostrils, through the eyes, to the top of the foreleg, and a (usually divided) broad brown stripe from the eyes and down the back.
The Alpine Tree Frog occurs in the south-eastern NSW and Victorian high country generally above 1100 m asl.
Habitat loss and modification by feral horses has been identified as a major threat to this species. Grazing habits of horses, and ground compaction from their large, heavy, sharp hooves changes vegetation structure and type, as well as creating erosion and causing degradation of water quality and changes to stream morphology.