Ansonia platysoma is a locally common toad of mid-elevation hills up to montane forest. This species is known from Kinabalu, Crocker Range, Gunung Mulu and Brunei.  The individual in the photo is only tentatively assigned to the species; as (we think) the taxonomy in Ansonia is not fully resolved yet. 

The toad is small in size. It is brown to olive in ground color. The warts on the back are rather smooth. The head is flat in profile and the snout is protruding.

Adults come to breed in clear rocky streams. Males call from vegetation in or along the stream.