They hunted fish. They hunt fish to trap the river and the sea. They make fishing traps themselves. In the Picture, a fisherman is setting food on trap for Pingas fishing in Noakhali, Chittagong, Bangladesh. These traps are made of bamboo sticks and nylon yarn. The fish's favorite food mixes are made of balls together and the ball is tied inside the trap with yarn. Fishes can enter the trap in many ways, but there is no way to out.