Preliminary survey of fish fauna at selected stream mouth of the Bakun Dam reservoir
Freshwater fishes play an important role in food supply, nature stability and ecological abundance. Over 600 freshwater fish species have been documented throughout Malaysia, with over 250 species reported in Sarawak alone. Fish species in Sarawak facing local threat due to overfished and overcon...
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| Main Authors: | , , , , |
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| Format: | Conference or Workshop Item |
| Language: | en |
| Published: |
2024
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/123828/1/123828.pdf http://psasir.upm.edu.my/id/eprint/123828/ |
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| Summary: | Freshwater fishes play an important role in food supply, nature stability and ecological
abundance. Over 600 freshwater fish species have been documented throughout Malaysia,
with over 250 species reported in Sarawak alone. Fish species in Sarawak facing local threat
due to overfished and overconsumption. This research aims to investigate fish diversity at
selected stream mouths in the Bakun Reservoir. Five sampling stations were randomly chosen
at stream mouths in the surrounding area of the Bakun Reservoir. The fish were caught using
three-layered gill nets, rod and line and casts net. Dominant species included Hemibagrus
fortis (27%), followed by Mystus singaringan (19%) and Neolissochilus soroides (15%).
Additionally, families Cyprinidae, Bagridae and Xenocyprididae were represented by seven,
two and one species, respectively. Station 3 and 4 exhibited high fish species richness with
each station hosting four different species. The Shannon diversity index was 1.302 (H’) at
station 3 and 1.153 (H’) at station 4, indicating moderate diversity levels. Overall, diversity
value (H’=2.031) indicates that the Bakun Reservoir is highly diverse with native fish species.
The data obtained from this study useful in updating information for better conservation and
management strategies of fisheries industries such as captured and recreational fisheries
towards the sustainable ecotourism management. |
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