257
Threats
At least in some parts of its range, facing threats
from habitat loss caused by natural calamities
and human interferences.
Remarks
Banarescu and Nalbant ( 1995 ) treat the species
under the genus Schistura McClelland.
32. Schistura doonensis (Tilak & Husain, 1977)
Noemacheilus doonensis Tilak & Husain, 1977.
Sci. & Cult ., 43(3): 133–135, fi gs. 1a, b, c
(type locality: a small stream near village
Kandholi on the way to Doonga; Soor Sahab
wali Khal, a stream near Asarori, District
Dehradun).
Nemacheilus doonensis Husain, 2003 . Faun.
Asan Wetland, Wetland Ecosystem Series 5 :
23–26 (seepage nala).
English Name
Doon Loach
Local Names
Gadera, Nauni.
Localities Surveyed
Seepage nala below Asan Barrage.
Small stream near village Kandholi on way to
Doonga.
Diagnostic Characters
D. 3/7, P. 1/8, V. 1/6–7, A. 3/5, C. 16.
Small-sized loach, subcylindrical and
slightly curved downwards anteriorly; area in
front of the pelvic fi ns fl attened, head depressed,
nostrils close together, membranous fl ap of
anterior nostril produced in the form of nasal
barbel, barbels longer than the eye, lips fl eshy
and continuous, upper jaw produced into beaklike truncated process while lower notched,
eyes almost in anterior half of the head, dorsal
origin variable and its 2nd branched ray longest (not produced), caudal fi n slightly emarginated and shorter than the head; scales
minute, body mostly devoid of scales, lateral
line incomplete. Body pale with 22–23 dark
vertical bars on lateral side and a darker one at
the caudal base, a few anterior rays of dorsal
fi n with a dark spot and a faint band across its
middle.
Maximum Size
3.4 cm.
Distribution
Uttarakhand
Garhwal Division: Chamoli, Dehradun and Pauri
districts; Kumaon Division: Nainital and
Pithoragarh districts.
India
No other record.
Elsewhere
No record.
Habitat and Ecology
Inhabits clear, swift streams with pebbly bottom.
Conservation Status
IUCN Red List, not evaluated.
Remarks
Of no fi shery value.
33. Schistura montana (McClelland, 1838)
Schistura montana McClelland, 1838 . J. Asiat.
Soc. Beng ., 7: 947, pl. 55, fi g. 1 (type locality:
mountain stream at Simla).
English Name
Shimla Loach.
Local Name
Gadera.
Localities Surveyed
Small stream, Dehradun-Mussoorie road (headwater of the tributary of Tons nadi – tributary of
Asan River).
Diagnostic Characters
D. 3/7–8, P. 1/8–10, V. 1/7, A. 3/5, C. 17–18
(8–9/9).
14 Fish Fauna of Asan River
Threats
At least in some parts of its range, facing threats
from habitat loss caused by natural calamities
and human interferences.
Remarks
Banarescu and Nalbant ( 1995 ) treat the species
under the genus Schistura McClelland.
32. Schistura doonensis (Tilak & Husain, 1977)
Noemacheilus doonensis Tilak & Husain, 1977.
Sci. & Cult ., 43(3): 133–135, fi gs. 1a, b, c
(type locality: a small stream near village
Kandholi on the way to Doonga; Soor Sahab
wali Khal, a stream near Asarori, District
Dehradun).
Nemacheilus doonensis Husain, 2003 . Faun.
Asan Wetland, Wetland Ecosystem Series 5 :
23–26 (seepage nala).
English Name
Doon Loach
Local Names
Gadera, Nauni.
Localities Surveyed
Seepage nala below Asan Barrage.
Small stream near village Kandholi on way to
Doonga.
Diagnostic Characters
D. 3/7, P. 1/8, V. 1/6–7, A. 3/5, C. 16.
Small-sized loach, subcylindrical and
slightly curved downwards anteriorly; area in
front of the pelvic fi ns fl attened, head depressed,
nostrils close together, membranous fl ap of
anterior nostril produced in the form of nasal
barbel, barbels longer than the eye, lips fl eshy
and continuous, upper jaw produced into beaklike truncated process while lower notched,
eyes almost in anterior half of the head, dorsal
origin variable and its 2nd branched ray longest (not produced), caudal fi n slightly emarginated and shorter than the head; scales
minute, body mostly devoid of scales, lateral
line incomplete. Body pale with 22–23 dark
vertical bars on lateral side and a darker one at
the caudal base, a few anterior rays of dorsal
fi n with a dark spot and a faint band across its
middle.
Maximum Size
3.4 cm.
Distribution
Uttarakhand
Garhwal Division: Chamoli, Dehradun and Pauri
districts; Kumaon Division: Nainital and
Pithoragarh districts.
India
No other record.
Elsewhere
No record.
Habitat and Ecology
Inhabits clear, swift streams with pebbly bottom.
Conservation Status
IUCN Red List, not evaluated.
Remarks
Of no fi shery value.
33. Schistura montana (McClelland, 1838)
Schistura montana McClelland, 1838 . J. Asiat.
Soc. Beng ., 7: 947, pl. 55, fi g. 1 (type locality:
mountain stream at Simla).
English Name
Shimla Loach.
Local Name
Gadera.
Localities Surveyed
Small stream, Dehradun-Mussoorie road (headwater of the tributary of Tons nadi – tributary of
Asan River).
Diagnostic Characters
D. 3/7–8, P. 1/8–10, V. 1/7, A. 3/5, C. 17–18
(8–9/9).
14 Fish Fauna of Asan River