Snake-head fish are raised in nets in the river when the level of water is higher, near the house. The investment will only be to buy nets and small fish as food. It takes 3 to 4 month to raise snake-head fish. At the end you can sell 60% of the production as the death risk is almost 40%. The average sell is about 600 kg at 25 000 đ/kg. The benefit will be around 4,5 million đ.