are they protected by any conservation group?
Australian law; under the federal Environment Protection and Biodiversity Conservation Act 1999
Australian green tree frog
Australian law gives protected status to the green tree frog—along with all Australian fauna—under the federal Environment Protection and Biodiversity Conservation Act 1999. 
where do green tree frogs go during the day They find cool, dark, and moist areas, such as tree holes or rock crevices, in which to sleep how did these frogs get their name? The name is often given to the most common green arboreal species in a region, such as the American green tree frog where are these frogs mostly found? Native to Australia and New Guinea what kind of people are found in the second place? The Papuans can you name some plants found here? The conifers "Podocarpus", rainforest emergents "Araucaria" and "Agathis," are some of them name one physical characteristic of the frog found in australia. It is plump, rather large tree frog, and can grow up to in length, with fully grown females being slightly larger than males what kind of behaviour do these frogs display? Are docile and unafraid of humans., and nocturnal in nature and what kind of behavior does the american specie display? Tends to be nocturnal, and in captivity they will be the most active once the lights are off can they be kept as pets? Yes can the australian specie also be kept as pets? Yes when does breeding in these frogs take place? Between November and February and how many eggs do they lay at a time? Clumps of between 200 and 2000 eggs are laid are these frogs threatened? No
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Australian green tree frog [SEP] Conservation
Australian law gives protected status to the green tree frog—along with all Australian fauna—under the federal Environment Protection and Biodiversity Conservation Act 1999. The International Union for Conservation of Nature lists the green tree frog's conservation status as being of "least concern", given its broad range, its large total population, and its tolerance of a variety of habitat types. The population trend seems to be stable, and any decline in numbers is not likely to be at a fast enough rate to justify listing it in a more threatened category. In suburban areas, this frog is threatened by pollution and by predation by domestic animals.