The slender tree frog (Litoria adelaidensis) is a tree frog endemic to southwestern Western Australia. A slender and narrow tree frog it has webbed feet and small discs. Very common in dense vegetation at the edge of static or slowly-moving water.
Usually breeds in early spring, but calls can be heard from autumn to mid-summer. Spawn is laid in an irregular mass just below the surface of the water. Metamorphosis occurs in late spring or early summer.