The difference between a shrimp hook and a barb is the same as fishing. Shrimp with barbs is not easy to unhook, but those without barbs are easy to escape. When fishing shrimps, shrimps usually bite the bait, and seldom bite the hook, but barbs can hook the bait, so shrimps are not easy to fall off. If there is no barb hook, they can't hook the bait, and when the water is blocked, they may even take the bait away. This is the difference.