The palm Borneo frog is a very small species, only 14-17 mm long. It is closely associated with clear, rocky hill streams in mid-elevation rainforest, and is thought to have highly stream-adapted tadpoles with long muscular tails that live in the fastest flowing areas of the stream. A high degree of toe webbing suggests that this species may be more stream-affiliated than its close relatives, which tend to roam widely around the forest. It is enigmatic and rare, having only been collected once in 1991, and so has been little-studied. The main threat to the species is habitat loss, since it occurs in a lowland forest type that is being rapidly logged.