Rare fishes of Himalayan waters of Nepal

Rare fishes of Himalayan waters of Nepal Department of Zoology, Kirtipur Campus, Tribhuvan University, Kathmandu, Nepal Key words: rare fish; conservation; threatened species; Nepal. The fishes of Himalayan waters are biologically diverse (Hora, 1937; Menon, 1974). More than 130 species occur in the snow-fed rivers and mountain lakes of the Nepalese highlands. Of the major rivers, Koshi has 108 species, Narayani has 102, Karnali has 74 and Mahakali has 69 species (Shrestha, 1990). In these rivers, and Sunkoshi and Trisuli, dams and barrages have been constructed for hydro-electric power stations and navigational purposes. The dams do not have fish-ladders and they obstruct and prevent upstream and downstream movements of fish. Rare migratory fishes like the species of mahseer and local ' trout ' (Cyprinidae; Table I), are also affected by changes in water velocity and fluctuating levels that sometimes expose the spawning beds. The shallow tailwater regions below dams where fish congregate are exploited by fishermen, poachers and predatory animals, killing rare fishes such as the stone carps (Psilorhynchidae), loaches (Cobitidae) and catfishes (Sisoridae) listed in Table I. The scientific management of the Nepalese mountain streams has just begun. The local human population has increased dramatically in the last two decades. Sewage, detergents and herbicides http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Fish Biology Wiley

Rare fishes of Himalayan waters of Nepal

Journal of Fish Biology, Volume 37 – Dec 1, 1990

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Publisher
Wiley
Copyright
Copyright © 1990 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0022-1112
eISSN
1095-8649
D.O.I.
10.1111/j.1095-8649.1990.tb05042.x
Publisher site
See Article on Publisher Site

Abstract

Department of Zoology, Kirtipur Campus, Tribhuvan University, Kathmandu, Nepal Key words: rare fish; conservation; threatened species; Nepal. The fishes of Himalayan waters are biologically diverse (Hora, 1937; Menon, 1974). More than 130 species occur in the snow-fed rivers and mountain lakes of the Nepalese highlands. Of the major rivers, Koshi has 108 species, Narayani has 102, Karnali has 74 and Mahakali has 69 species (Shrestha, 1990). In these rivers, and Sunkoshi and Trisuli, dams and barrages have been constructed for hydro-electric power stations and navigational purposes. The dams do not have fish-ladders and they obstruct and prevent upstream and downstream movements of fish. Rare migratory fishes like the species of mahseer and local ' trout ' (Cyprinidae; Table I), are also affected by changes in water velocity and fluctuating levels that sometimes expose the spawning beds. The shallow tailwater regions below dams where fish congregate are exploited by fishermen, poachers and predatory animals, killing rare fishes such as the stone carps (Psilorhynchidae), loaches (Cobitidae) and catfishes (Sisoridae) listed in Table I. The scientific management of the Nepalese mountain streams has just begun. The local human population has increased dramatically in the last two decades. Sewage, detergents and herbicides

Journal

Journal of Fish BiologyWiley

Published: Dec 1, 1990

References

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