This species is known only from two localities on Tioman Island, Malaysia, at an altitude of 300-1,000m asl.
Habitat and Ecology
It is associated with boulders and waterfalls in caves. Breeding is presumed to take place in streams.
The population status of this species is unknown, but it is presumed to be stable at present.
The species' habitat is not currently under immediate threat, but the potential clearance of habitat for tourism infrastructure is of concern for the future.
Tioman Island has been designated as a protected area; continued enforcement of this protected status is required. Safeguarding caves and other high-altitude habitats on Tioman Island is needed. The population status of this species requires careful monitoring, given that it is known only from a single location.
Red List Status
Listed as Vulnerable because it is known from only a single location.
Peter Paul van Dijk, Jeet Sukumaran, Norsham Yaakob, Leong Tzi Ming 2004. Ansonia tiomanica. The IUCN Red List of Threatened Species 2004: e.T54484A11139960. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T54484A11139960.en .Downloaded on 23 January 2019