The triangle shape mouth of a 3.5 m long bag net with a mesh 
                    size of 7 mm is framed on bottom part by a 2.5 m wide bamboo beam and connected to the 2 m 
                    two top beam. It is towed by one boat, which is connected by 150 – 200 m long PE 15 mm in diameter 
                    rope. The bottom side of the net beam is broadened to allow it to slide over the river bottom. The 
                    fishermen pull the towing rope by hand. The target species juveniles shrimp and fish.