^ Really toxins in skin? i honestly didn't know that...
I know that the toxins are in there system, but not on the outside, otherwise, how come when other animals / fish attack puffers in the wild they don't die? If said animal ate the puffer, then yes, most likely they will die from the poisoning, but just from in essence biting their body, i've never heard of fish getting poisoned? Coz if that was the case, my yellow lab Chiclid would be long dead by now...
Also, i think its been proven that in an aquarium setting that puffers lose a lot if not all their toxins due to their diets etc? although can't remember 100% if that was scientifically proven...