Devario pathirana

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	ACTINOPTERYGII	CYPRINIFORMES	CYPRINIDAE

Scientific Name:

Devario pathirana

Species Authority:

(Kottelat & Pethiyagoda, 1990)

Common Name/s:

English

–

Barred Danio

Synonym/s:

Danio pathirana

Danio pathirana Kottelat & Pethiyagoda, 1990

Assessment Information [top]

Red List Category & Criteria:

Endangered B1ab(iii) ver 3.1

Year Published:

2009

Assessor/s:

Devi, R. & Boguskaya, N.

Reviewer/s:

Collen, B., Darwall, W., Ram, M. & Smith, K. (SRLI Freshwater Fish Evaluation Workshop)

Contributor/s:

Justification:
D. pathirana has been assessed as Endangered due to its restricted range (less than 5,000 km²), the species is threatened by a decline in habitat quality, and is found in less than five locations, given the main threat of pollution.

History:

1996	–	Critically Endangered
1994	–	Vulnerable (Groombridge 1994)

Geographic Range [top]

Range Description:	This species is known from one area in the Nilwala River basin, in Opatha, Sri Lanka (R. Devi, pers. comm.). The range of this species is an estimated 818 km².
Countries:	Native: Sri Lanka
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	D. pathirana is reported to be numerous within its limited range (Pethiyagoda 1994).
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	D. pathirana is a pelagic species that occurs in swift flowing streams, with pebble or boulder substrates. It has not been found in silted rivulets flowing into the mainstream. It forms groups of 3-5 individuals slowly moving near the surface.
Systems:	Freshwater

Threats [top]

Major Threat(s):	D. pathirana is threatened by pressure from shade loss and agricultural effluents (Pethiyagoda 1994). During the past two centuries, nearly all the natural forests in this eco-region have been cleared for tea, rubber, and coconut plantations, rice paddies, and human settlements (WWF 2001).

Major Threat(s):

D. pathirana is threatened by pressure from shade loss and agricultural effluents (Pethiyagoda 1994).

During the past two centuries, nearly all the natural forests in this eco-region have been cleared for tea, rubber, and coconut plantations, rice paddies, and human settlements (WWF 2001).

Conservation Actions [top]

Conservation Actions:	It is not known if there are any conservation measures in place or needed.

Conservation Actions:

It is not known if there are any conservation measures in place or needed.

Citation:	Devi, R. & Boguskaya, N. 2009. Devario pathirana. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 19 June 2013.
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