Aborichthys elongatus 

Scope: Global
Status_ne_offStatus_dd_offStatus_lc_onStatus_nt_offStatus_vu_offStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Cypriniformes Balitoridae

Scientific Name: Aborichthys elongatus
Species Authority: Hora, 1921
Taxonomic Notes: Hora (1921) reported the species from Darjeeling, India. Further taxonomic work is required to investigate whether the two known populations of this species are the same.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2010-01-22
Assessor(s): Vishwanath, W.
Reviewer(s): Britz, R. & Allen, D.J.
Contributor(s): Molur, S.
Justification:
Aborichthys elongatus is found in Arunachal Pradesh and western Bengal; it is not known from intermediate watersheds. At present the species is assessed as Least Concern, given the relatively wide distribution, and the assumption that it is probably present in watersheds between the two known localities. Further taxonomic work is required, and the assessment should be revised given further information.

Geographic Range [top]

Range Description:Aborichthys elongatus is distributed in North Bengal and Arunachal Pradesh in India.  Nath and Dey (2000) reported the species to occur in different parts of Arunachal Pradesh, but the distribution is fragmented.
Countries occurrence:
Native:
India (Arunachal Pradesh, Darjiling)
Additional data:
Continuing decline in extent of occurrence (EOO):UnknownExtreme fluctuations in extent of occurrence (EOO):Unknown
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no information on the population and its trends for this species.
Current Population Trend:Unknown
Additional data:
Continuing decline of mature individuals:Unknown
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:The species is found to occur in streams with pebbly bottoms; most likely in clear ozygenrich water.  It is a mountain stream specialist.
Systems:Freshwater

Use and Trade [top]

Use and Trade: This species attains a length of 5.4 cm SL and is of no interest to fisheries.

Threats [top]

Major Threat(s): Aborichthys elongatus is known from hill streams which vary in volume with season. There is a need for improved habitat protection at sites where this species is known to occur.  Further survey work is needed to determine whether this species is experiencing a decline or is undergoing natural population fluctuations.  In Darjeeling, part of the species currently known range, hill streams are pollutde from agricultural run-off and the there is reported widespread use of poison fishing.

Conservation Actions [top]

Conservation Actions: It is also known from Namdapha National Park. There is a need for improved habitat protection at sites where this species is known to occur. Further survey work is needed to determine whether or not this species is experiencing a decline or is undergoing natural population fluctuations.

Classifications [top]

5. Wetlands (inland) -> 5.1. Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)
suitability:Suitable  major importance:Yes
5. Wetlands (inland) -> 5.2. Wetlands (inland) - Seasonal/Intermittent/Irregular Rivers/Streams/Creeks
suitability:Suitable  major importance:Yes

In-Place Research, Monitoring and Planning
  Action Recovery plan:No
  Systematic monitoring scheme:No
In-Place Land/Water Protection and Management
  Conservation sites identified:Yes, over part of range
  Occur in at least one PA:Yes
  Area based regional management plan:No
  Invasive species control or prevention:Not Applicable
In-Place Species Management
  Harvest management plan:No
  Successfully reintroduced or introduced beningly:No
  Subject to ex-situ conservation:No
In-Place Education
  Subject to recent education and awareness programmes:No
  Included in international legislation:No
  Subject to any international management/trade controls:No
1. Residential & commercial development -> 1.1. Housing & urban areas
♦ timing:Ongoing ♦ scope:Minority (<50%) ♦ severity:Slow, Significant Declines ⇒ Impact score:Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Residential & commercial development -> 1.3. Tourism & recreation areas
♦ timing:Ongoing ♦ scope:Minority (<50%) ♦ severity:Slow, Significant Declines ⇒ Impact score:Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.4. Fishing & harvesting aquatic resources -> 5.4.1. Intentional use: (subsistence/small scale) [harvest]
♦ timing:Ongoing ♦ scope:Majority (50-90%) ♦ severity:Rapid Declines ⇒ Impact score:Medium Impact: 7 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

6. Human intrusions & disturbance -> 6.1. Recreational activities
♦ timing:Ongoing ♦ scope:Minority (<50%) ♦ severity:Slow, Significant Declines ⇒ Impact score:Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion

1. Research -> 1.1. Taxonomy
1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats

Bibliography [top]

Hora, S. L. 1921. On some new or rare species of fish from the eastern Himalayas. Records of Indian museum, Calcutta. 22: 731-744.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.4). Available at: http://www.iucnredlist.org. (Accessed: 27 October 2010).

Nath, P. & Dey, S.C. 2000. Fish and Fisheries of NorthEast India (Arunachal Predesh). Narendra Publishing House, New Delhi.


Citation: Vishwanath, W. 2010. Aborichthys elongatus. In: The IUCN Red List of Threatened Species 2010: e.T166431A6207732. . Downloaded on 27 September 2016.
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