Adult Size is Up to 2 1/2 inches long
Life Expectancy is 2 to 5 years.
A minimum 10-gallon tank is suitable as a cage for green tree frogs, although larger is fine. Keep in mind that frogs are arboreal (meaning they spend almost all their lives in trees) and the height of the cage is more important than the floor space, so a tall tank is best. You also need a secure cover to prevent escape (mesh or wire is fine).
You can use a variety of materials for a substrate such as smooth gravel, cypress mulch, or soil with peat/vermiculite. Just make sure the frog is not ingesting substrate while feeding. Some people use indoor/outdoor carpeting. The substrate can largely be covered with moss and cork bark.
An opportunity for climbing is very important, so provide a variety of branches and live or artificial plants.
fresh still water should be provided in a bowl big enough for them to bathe in and are fed on calci dusted crickets a few times a week