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Waterfall climbing cave fish
The waterfall climbing cave fish (''Cryptotora thamicola''), also known as the cave angel fish, is a species of troglobitic hillstream loach endemic to Thailand. It reaches a length of SL. This fish is known for its fins which can grapple onto terrain and is capable of climbing.〔Reference needed〕 This fish is the only known member of its genus.〔Kottelat, M. (2012): (Conspectus cobitidum: an inventory of the loaches of the world (Teleostei: Cypriniformes: Cobitoidei). ) ''The Raffles Bulletin of Zoology, Suppl. No. 26: 1-199.''〕
The species has been recorded from eight subterranean sites within a large karst system (Pang Mapha karst formation) in Mae Hongson Province, Thailand. The species has an Extent of Occurrence of nearly 200 km2, but an Area of Occupancy of 6 km2; the connectivity of this karst systems is unknown, some caves are definitely connected. The species is found in eight of the caves. It has been recorded from the Susa (from where it was first collected in May 1985) and Mae Lana caves (Borowsky and Vidthayanon 2001). It may also occur in other submerged caves in the area. However, the species has a potential threat of agricultural pollution which could impact the whole karst system, making it one location.〔Vidthayanon, C. 2013. Cryptotora thamicola. The IUCN Red List of Threatened Species. Version 2014.3. . Downloaded on 03 April 2015.〕
It is depigmented and has no visible eyes. This species coexists with another hypogean loach, Schistura oedipus. The species is specialized for fast subterranean flowing water in the deeper zone of the cave (more than 500m from the entrance). It depends on cave micro-organism and organic matter, and is very sensitive to disturbance, water quality and hydrographic change.〔Vidthayanon, C. 2013. Cryptotora thamicola. The IUCN Red List of Threatened Species. Version 2014.3. . Downloaded on 03 April 2015.〕
The species is protected under Thai law, and is found within a National Park (Pai Basin NP), but this does not necessarily protect the species as there is little restrictions on agricultural practices and regulation of tourism is needed to reduce the potential impacts to the species habitat at some sites. Human disturbance from tourism activity (some of the habitat sites are popular for caving tourism and sightseeing) may threaten the species. Agriculture and deforestation are future major threats.〔Vidthayanon, C. 2013. Cryptotora thamicola. The IUCN Red List of Threatened Species. Version 2014.3. . Downloaded on 03 April 2015.〕
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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