The adult frog is 6.0 cm long. It lives in forests, grasslands and swamps. It has sometimes been seen in northwestern Australia, far from its natural range. Citizen scientists from Frogwatch SA think this is because people keep Peron's tree frogs as pets and then they either escape or are set free. This frog is usually gray-green during the day. It turns red-brown with green spots at night. It has black and yellow colouring on its legs. It looks very similar to Tyler's tree frog. Scientists tell them apart because their voices sound different.