I loved my little belly when i had him. He of course was a dwarf puffer. I have a couple words of advice for you when it comes to these great fish.
1) Frozen bloodworms is a must. DP's love the bloodworms and it's a good thing for their diet.
2) Snails are a good thing to supplement them with, though if you have any snails in your tank be ready to have none
3) When feeding comes, if feeding food you can pinch between your fingers, let your DP's eat the food from between your fingers, it will make them more friendly to you.
Check out http://dwarfpuffers.com/
i believe treniac is the mod over there, a plethor of info, and they could probably find you a good site someone can vouch for there.