Fish Fauna of Asan River and Its Tributaries, Western Doon Valley, Dehradun (Uttarakhand), with Conservation Status of Species and Threats - Aquatic Ecosystem: Biodiversity, Ecology and Conservation - page 235

Habitat and Ecology
Inhabits clear water hill streams and large rivers
with gravelly substratum. It is a benthopelagic
bottom feeder.

Diagnostic Characters
D. 2/7, P. 1/12-14, V. 1/8, A. 2-3/7-8, C. 19, L.l.
40-45.
Snout and lower jaw with tubercles; barbels
two short pairs, rostral pair often absent; dorsal fi n
inserted entirely in advance of anal fi n. Body sil-
very with 8-12 vertical bands; scales with many
radii, lateral line complete with double black spot.
Sexual Dimorphism: Male large and robust with
paired fi ns enlarged and fan-like, outer few rays of
pectorals strongly thickened and ossifi ed, dorsal
and anal fi ns well expanded; snout, lower jaw and
outer branchiostegal rays covered by thorny tuber-
cles, body roughened due to presence of tubercles,
bands faded and dorsal fi n margin grey-edged.
Female normal without above modifi cations.

Conservation Status
IUCN Red List, least concern.

Threats
It is locally threatened by destructive fi shing
techniques such as dynamite fi shing, overexploi-
tation, loss of habitat and siltation.

Remarks
Of no fi shery interest.

13. Barilius bendelisis ( Hamilton, 1822 )
Cyprinus bendelisis Hamilton, 1822. Jour.
Mysore , 3: 345, pl. 32 (type locality: Vedawati
system, Headwaters of Krishna river near
Heriuru, Mysore).
Barilius bendelisis Husain, 2003 . Faun. Asan
Wetland, Wetland Ecosystem Series 5 : 23-26
(Asan reservoir, seepage nala, Asan River
above Kunja Grant and below its barrage).

Maximum Length
22.7 cm.

Distribution

Uttarakhand
Garhwal Divisionn: Chamoli, Dehradun, Haridwar,
Pauri, Tehri and Uttarkashi districts; Kumaon
Division: Almora, Nainital and Pithoragarh districts.
Corbett Tiger Reserve and Rajaji National Park. English Names

Hamilton's Barila, Hill Trout.

India
Throughout except Kerala. Karnataka (Cedawati-
Vedawati stream, headwaters of Krishna river
near Heriuru, Mysore).

Local Name
Chedra, Chilwa.

Localities Surveyed
Asan River above Kunja Grant, below Dhalipur
Barrage, villages Partitpur and Bairagiwala near
Herbertpur, Sahaspur, Sabhawala, village
Bhurpur near Jhajra and at Chandrabani; seepage
nala below Asan Barrage; Asan reservoir. Swarna
nadi, Bhauwala; Karwapani, Asarori; Naro nadi
near village Langha and at Bhurgaon near
Bansiwala; Tons nadi at Premnagar, village
Chandrauti, Bijapur and Robber's cave, Birhani
nadi near Panditwari; Nimi nadi, Paundha; Nun
nadi, Jaintanwala; Nalota nala at village
Chandrauti and village Malsi on lower Mussoorie
road; Kiarkuli nadi and Bhitarli nadi near village
Khera and Jaspur. Small stream (Manaksidh rao),
Karwapani, Asarori forest.

Elsewhere
Bangladesh, Bhutan, Myanmar (main), Nepal,
Pakistan, Sri Lanka and Thailand.

Habitat and Ecology
Found in streams and rivers along the base of
hills with sandy, pebbly and rocky bottom.

Conservation Status
IUCN Red List, least concern.

Threats
The possible threats to this species are overex-
ploitation and habitat destruction due to natural
and certain human activities.