Dahl's aquatic frog
Dahl's aquatic frog, the northern waterfrog, Dahl's olive tree frog, Dahl's tree frog, floodplain frog, northern lagoon frog or aquatic frog (Ranoidea dahlii) is a tree frog from Australia and New Guinea.  Most of them live in Western Australia and the Northern Territory.  There are a few more in Queensland and New Guinea.