Schistura oedipus


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Schistura oedipus
Species Authority: (Kottelat, 1988)

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2013
Date Assessed: 2011-02-25
Assessor(s): Vidthayanon, C.
Reviewer(s): Ng, H.H. & Allen, D.J.
Contributor(s): Kottelat, M.
This species is only known from subterranean streams in caves of Pang Mapha karst formation in north-western Thailand. Given the nature of the hydrological system and the likely limited extent of occurrence (considered to be much less than 2,000 km²), the species is assessed as Vulnerable (D2). Current and potential threats are tourism development and degradation of the surrounding watershed and water quality.
1996 Vulnerable
1994 Rare (Groombridge 1994)
1990 Rare (IUCN 1990)

Geographic Range [top]

Range Description: The species is known only from subterranean streams in caves of Pang Mapha karst formation in Mae Hongson Province, Thailand. It was described from specimens collected from the Tham Nam Lang cave. Its extent of occurrence is uncertain, but is likely to be much less than 2,000 km².
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: No information is available on population size or trends for this species.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: The species is strictly specific to torrent subterranean streams. It is dependent on cave micro-organism and organic matter, and is very sensitive to disturbance, water quality and hydrographic change.
Systems: Freshwater

Use and Trade [top]

Use and Trade: Very occasionally seen in the aquarium trade.

Threats [top]

Major Threat(s): Human disturbance from tourism activities may threaten species' habitat. Agriculture and deforestation within the watershed are future major threats.

Conservation Actions [top]

Conservation Actions: Protected by Thai law. Research into population trends and threats is required.

Citation: Vidthayanon, C. 2013. Schistura oedipus. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 04 March 2015.
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