Abstract:
This project mainly studies the water quality of the Manjung River in Perak,
Malaysia. Six sampling sites were used to collect water quality and fish samples.
The goal of this study was to verify the water quality parameters based on the
diversity of freshwater fish distribution. The second is to evaluate the influence
of water quality on freshwater fish distribution. Finally, data on fish diversity and
distribution in the study area will be analyzed. The method used in this study's
data collection and analysis is the collection of water samples in a designated
research region using designated equipment. A fishing net was utilised as a
method to gather fish samples. The analysis of fish diversity (H'), richness (R'),
and evenness (E') was done using PAST software. Fish from 11 distinct species
and 7 different families totaled 162 individual fish in total. Fish belonging to the
family Cyprinidae made up the majority of the region's fish species (50 species;
41.5%), followed by those belonging to the families Bagridae and Cichlidae (22
and 21 species; 27.69%). Additionally, samples of four fish species were
gathered, including Latidae, Notopteridae, Balitoridae and Eleotridae, all of
which are considered endangered. In this river, pH was the most significant
water quality factor for fish occurrences, followed by temperature, conductivity,
dissolved oxygen, salinity, and turbidity. Data analysis shows that the presence
of fish was influenced by a number of water quality factors, but not by the
sampling month. The findings provide fresh information from research of fish
assemblage and habitat quality that may be crucial for river fisheries activity and
fish conservation in the future.
