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.