This species is known from extreme southern Thailand (Hala-Bala Wildlife Sanctuary in Narathiwat, and Yala Province) and in south to central Peninsular Malaysia (Pepak, Kelantan, Terengganu, and Pahang). Its altitudinal range is from 300-1,200 m asl.
Habitat and Ecology
It inhabits moist rainforest. Individuals are generally found in or near streambeds. It is thought to breed in streams.
It is uncommon to common in areas where it occurs.
Its habitats are relatively secure and it can survive in forests that have been selectively logged. Locally, some subpopulations might be at risk from forest clearance.
The species is known to inhabit a number of legally protected areas (Taman Negara National Park and Hala-Bala Wildlife Sanctuary) and watershed/amenity protection areas (Genting Highlands). Monitoring populations and studying its conservation biology would be useful.
IUCN SSC Amphibian Specialist Group 2014. Leptolalax heteropus. In: IUCN 2014