System development of fish attractor (sound and light combination) in fixed lift net fisheries

Sound wave -based attractions at certain frequencies with a combination of lighting as a medium of fishing aids can attract the attention of fish to approach the fishing area. The use of a fixed lift-net fishing gear requires innovation that can help small-scale fishermen to increase the catch. The purpose of the study was to design fish-caller model with optimal sound waves when operated. The results showed that the design of the attractor which then named “APILBAG” was efficient enough to use because it could save the operational costs of light fishing and could be operated for 34 h. The sound wave used was recording and imitating the sound model of the sea water bubbles released by the fish species under the fixed lift-net, with sound frequency ranged from 40–1,800 Hz and the frequency peak was 753 Hz with relative amplitude ranges from 40 dB to 60 dB. At a distance of 1–5 m in the air. The frequency of the sound affected attractor was the fish to approach the attractor and combination of red-colored light on the attractor was quite effective to attract fish collected under the fixed lift-net.