Thanks for sharing your experience. It's just different than everyone else's reports about these guys. Some of them even live with really small fish. And his was 6 inches? They supposedly don't get much bigger than 4.5. Weird.
Again, I have no puffer experience, but from what I read supposedly people supposedly get GSPs, Ceylons, and Spotted Congos confused....
I guess it's like cichlids - you never know and always have to be prepared to remove them.