Abstract:
The construction design of fishing gear is strongly influenced by the
environmental conditions of the waters where it is operated. This study tends
to describe the design and construction of gillnets, analyze the composition and
proportion of gillnet catches, and evaluate the construction calculations of the
gear. The results describe the structure of a fixed gillnet consisting of several
main components, including the net body, upper ropes, floats, and weights. The
catch composition consisted of twelve fish species dominated by Asian redtail
catfish (Hemibagrus nemurus), followed by blue sheatfish (Kryptopterus
kryptopterus), Waanders' barb (Puntioplites waandersi), and several other
species such as marble goby, grayfish, tongue sole, and various catfish species.
Overall, the catch was largely dominated by freshwater catfish groups,
indicating the suitability of gillnets for capturing demersal and benthopelagic
species in the study area. The results of the gillnet construction calculations
showed a shortening value of 57.13%, a net height of 3.8m, and a net area of
172.8m². The buoyancy and sinkage analysis indicated that the floatation and
weighting system was balanced and able to maintain the optimal vertical
position of the net in the water column. These findings suggest that the current
gillnet construction is technically appropriate for local fishing conditions and
contributes to an improved understanding of gear performance in inland
fisheries.
