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FISH DIVERSITY AND FISHERY RESOURCES OF THE TINAU RIVER, WESTERN NEPAL

Jay Narayan Shrestha

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Abstract

Present investigation reveals the existing fish fauna and their distribution pattern in the Tinau River, Western Nepal. A total of 35 species belonging to 25 genera, 12 families and 5 orders are recorded. Among collected fish species, Cyprinidae family was dominant constituting 81.73% of the total, followed by Cobitidae constituting 11.24% of the total collection. Physico-chemical and biological parameters of water were analysed to determine distribution, abundance and frequency of ichthyofauna. Chemical nature of water was found to be suitable with well-oxygenated and slightly alkaline pH range. Existing dam in the Tinau River has negative effect to migratory fishes, e.g., Bagarius bagarius, Labeo angra and Tor tor of which former two species have totally disappeared from upstream of the dam.

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What this paper is about

Present investigation reveals the existing fish fauna and their distribution pattern in the Tinau River, Western Nepal. A total of 35 species belonging to 25 genera, 12 families and 5 orders are recorded. Among collected fish species, Cyprinidae family was dominant constituting 81.73% of the total, followed by Cobitidae constituting 11.24% of the total collection. Physico-chemical and biological parameters of water were analysed to determine distribution, abundance and frequency of ichthyofauna. Chemical nature of water was found to be suitable with well-oxygenated and slightly alkaline pH range. Existing dam in the Tinau River has negative effect to migratory fishes, e.g., Bagarius bagarius, Labeo angra and Tor tor of which former two species have totally disappeared from upstream of the dam.

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Available abstract

Present investigation reveals the existing fish fauna and their distribution pattern in the Tinau River, Western Nepal. A total of 35 species belonging to 25 genera, 12 families and 5 orders are recorded. Among collected fish species, Cyprinidae family was dominant constituting 81.73% of the total, followed by Cobitidae constituting 11.24% of the total collection. Physico-chemical and biological parameters of water were analysed to determine distribution, abundance and frequency of ichthyofauna. Chemical nature of water was found to be suitable with well-oxygenated and slightly alkaline pH range. Existing dam in the Tinau River has negative effect to migratory fishes, e.g., Bagarius bagarius, Labeo angra and Tor tor of which former two species have totally disappeared from upstream of the dam.

Key concepts: Fauna, Fishery, Cobitidae, Cyprinidae, Labeo, Range (aeronautics), Fish <Actinopterygii>, Abundance (ecology)

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