Superciliary Narrow-mouthed Frog

The Batu Cave rice frog is a frog in the family Microhylidae found in Peninsular Malaysia and Sumatra. The type locality is Batu Caves, a limestone crag area surrounded by lowland forest, which gave it its common name. In Sumatra it is found in forested areas, and breeding presumably takes place in slow-flowing rivers (Wikipedia, general species account).