Lepidopygopsis typus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Cypriniformes Cyprinidae

Scientific Name: Lepidopygopsis typus Raj, 1941
Common Name(s):
English Peninsular Hill Trout, Periyar Trout
Taxonomic Notes: Lepidopygopsis typus was first described by Raj (1941) from Periyar Lake, Kerala, India.

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2011
Date Assessed: 2010-04-03
Assessor(s): Raghavan, R. & Ali, A.
Reviewer(s): Rema Devi, K.R., Gopalakrishnan, A., Arunachalam, M., Shrikant, J., Johnson, J.A., Rahul, K. & Molur, S.
Contributor(s): Molur, S.
Lepidopygopsis typus is assessed as Endangered as it has a highly restricted distribution; known only from a four locations within the Periyar Lake-Stream system in the Periyar Tiger Reserve, Kerala, India having an area of occupancy of less than 30 km2 and extent of occurrence of less than 1000 km2, and subjected to an on-going decline in the quality of habitat and in competition with exotic alien fishes.

Geographic Range [top]

Range Description:Lepidopygopsis typus is endemic to the Periyar Tiger Reserve, Kerala, India where it occurs at Mlappara, Thanikkudy, Mullayar and Thekkady in the Periyar lake-stream system (Arun 1999, Ponniah and Gopalakrishnan 2000, Kurup et al. 2004, Euphrasia et al. 2006, Raj 1941).
Countries occurrence:
India (Kerala)
Additional data:
Estimated area of occupancy (AOO) - km2:30Continuing decline in area of occupancy (AOO):No
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:663
Continuing decline in extent of occurrence (EOO):NoExtreme fluctuations in extent of occurrence (EOO):No
Number of Locations:4
Lower elevation limit (metres):800
Upper elevation limit (metres):1400
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:No estimates of population status of L. typus are available, although the species is considered to be rare (Kurup et al. 2006, Zacharias et al. 1996). Catch per hour of L. typus from Thanikkudy is very low (Euphrasia et al. 2006).
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Found in fast flowing torrential streams (Raj 1941, Arun 1999) with boulders, cobbles (Shaji and Easa 2001) and bed rock (Manojkumar and Kurup 2002) as substrates. Known to be a habitat specialist with affinity towards cascades and riffles (Manojkumar and Kurup 2002). Also occurs in confluence zone of  lakes and feeder streams (Arun 1999). Lepidopygopsis typus feeds mainly on aquatic insects and detritus (Arun 1999).
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: Lepidopygopsis typus is used occasionally as a food fish by local tribes inside the Periyar Tiger Reserve (A.Ali and R. Raghavan pers.obs.) and is also considered to be a potential ornamental fish (Kurup et al. 2004, Kurup and Radhakrishnan 2006).

Threats [top]

Major Threat(s): Exotic species, pollution and presence of a dam are the major threats to L. typus in the Periyar lake-stream system. Three exotic species - Cyprinus carpio var. communis, Oreochromis mossambicus and Clarias gariepinus occur in Periyar Lake (Kurup et al. 2006, Periyar Foundation 2006). High level of competition exist between L. typus and O. mossambicus (0.68) and between L. typus and C. carpio (0.49) (Arun 1999).

Conservation Actions [top]

Conservation Actions: No conservation action is in place. Species level management efforts have been largely hampered by absence of baseline data on life history and population.

Citation: Raghavan, R. & Ali, A. 2011. Lepidopygopsis typus. The IUCN Red List of Threatened Species 2011: e.T172507A6905893. . Downloaded on 23 June 2018.
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