There are some puffer people here so you should get your answer soon. They are very nice fish (these puffers) but their extra considerations are too much for my tanks
I have 3 Kuhuli's with 3 Dwarf Puffers (among others) in my 37 gallon. The Puffers were a little aggressive and nipped the Kuhuli's for about a week after introduction, then settled down.