Hi Jerry.

My understanding is that the majority of DPs in the aquarium trade today are tank-bred. DPs have really only been on the scene as aquarium fish in the U.S. since the early to mid-1990s, when most, if not all, were wild caught. But as more knowledge was uncovered about these little puffers, the ease of breeding them on a mass scale became understood, and tank-bred is the norm now.