This is my experience with IP's (internal parasites) and puffers. 99% of all puffers are wild caught. There are very few puffers that will breed in captivity. With that being said you "must" treat any puffer you purchase for IP's.

If you are thinking about buying a puffer make sure you have a fully cycled tank. Ammonia and Nitrites are highly toxic to puffers. Do your research before you buy. What size tank does my
puffer need, is the puffer I want freshwater or brackish water?...