Puffers’ ability to inflate their stomachs is not limited to water, when raised into the air; you run the risk of the puffer inflating himself with a stomach full of air. Which is not a good thing, many puffers have difficulties expelling trapped air. Those puffers that can't release the air can actually become stressed enough that they perish. If your puffer does become inflated with air, there is a method of helping it release it. Which needs steady but gentle hands. You will have to hold the puffer with your hands, with it's head facing up, then begin to gently massage the belly of the fish upwards to it's chin. This will help the valves release and the air to escape from the upward facing puffer's mouth