5.6.9 The icefish three-angle net is shaped like a hollow tube with a bag net attached to each corner, and then a fixed line is extended from the end and mainly fixed to the horse's mouth, anchor, or rock, and the target organisms are lured into the hollow tube along the gill net placed towards the entrance of the hollow tube, and the catch is caught in the bag net. There are three funnel nets inside the bag net, making it difficult for the fish that has entered to return. Without using a separate sieve, the buoy and the footstone are directly attached to the tendon of the net, and once the fishing gear is set, it is left in one place until the end of the fishing period. After the fishing period ends, the debris attached to the net is removed or the catch is removed.