Fish community in the Hoengseong Reservoir was investigated from April to
October 2005. The total number of fish caught from the period was 8,626 fish
representing 22 species and 8 families, using fyke net and trammel net. Besides
biomass was 122.9 kg. In the fyke net, 8,168 individuals caught during the period
represented 21 species belonged to 8 families, its biomass was 96.6 kg. On the other
hand, 458 individuals caught in the trammel net during the period represented 16
species belonged to 6 families, its biomass was 26.3 kg. The results showed that the
trammel net had lower number of species, individuals, and less biomass compared to
those of the fyke net. Number of species confirmed was increased according as mesh
size of the net was smaller. Besides, the fyke net with small mesh size was able to
collect not only small-sized fish but also large-sized fish so that it was suitable to
study qualitative and quantitative analysis of fish fauna in detail. Whereas, the
trammel net with proper mesh size was effective to determine composition of fish
species in the studied area.