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 237

of opercle; lateral line absent, rudimentary or
incomplete, extending beyond the pectoral fi n or
up to the base of the pelvic fi ns. Body sides blue,
traversed with fi ve uniformly, pigmented,
horizontal golden stripes, extending to the end of
caudal fi n rays; anal fi n also distinctively striped.
Sexual Dimorphism: In male, body slim, cau-
dal fi n typically homocercal and blunt and lighter
in colour, while in female, body with bulging
sides and deeper colouration.

Threats
Being a popular aquarium fi sh, it might suffer
from overexploitation resulting in fl uctuation of
individuals.

Remarks
Of no fi shery interest; kept in aquaria.
Genus: Devario Heckel, 1843

16. Devario devario (Hamilton, 1822)
Cyprinus ( Cabdio ) devario Hamilton, 1822. Fish.
Ganges : 341-342, 393, pl. 6, Fig. 94 (type
locality: rivers and ponds of Bengal).
Danio devario 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
3.8 cm (standard length).

Distribution

Uttarakhand
Garhwal Division: Dehradun, Haridwar, Pauri
and Tehri districts; Kumaon Division: Almora,
Nainital and Udham Singh Nagar districts.
Corbett Tiger Reserve and Rajaji National Park.

English Names
Devario Danio, Sind Danio.

India
Andhra Pradesh, Arunachal Pradesh, Assam,
Bihar, Haryana, Gujarat, Karnataka, Kerala,
Madhya Pradesh, Meghalaya, Nagaland, Punjab,
Rajasthan, Odisha, Uttar Pradesh, Tripura and
West Bengal.

Local Name
Chand.

Localities Surveyed
Asan River above Kunja Grant, below its barrage
at Dhalipur, Herbertpur, villages Partitpur and
Bairagiwala near Herbertpur, Bhaironwala,
Sabhawala and village Bhurpur near Jhajra; seep-
age nala below barrage; Asan reservoir.
Swarna rao, Bhauwala; small stream, culvert
No. 19/2, Selakui.

Elsewhere
Bangladesh, Bhutan, Myanmar, Nepal and
Pakistan. Colombia (presumably by escape from
aquaria fi sh rearing facility).

Habitat and Ecology
Inhabits streams, canals, ditches, ponds and
lakes. Also occurs in slow-moving to stagnant-
standing water bodies, particularly ricefi elds,
lower reaches of streams, rivulets at foothills.
Feeds on worms and small crustaceans and also
on insect larvae. Breeds all year round. Spawning
is induced by temperature and commences at the
onset of the monsoon season. Food availability
also acts as cue for breeding.

Diagnostic Characters
D. 2-3/15-17, P. 1/11-12, V. 1/7, A. 2-3/16-17,
C. 19, L.l. 33-38.
Body rhomboidal; barbels absent; lateral line
complete. Body greenish above, silvery on sides;
three blue narrow bands divided by yellow bands
extending backwards to the caudal fi n with a pair
of blue marks at its base.

Maximum Length
10.0 cm.

Conservation Status
IUCN Red List, least concern.

Distribution