| To tell the truth, I have never had to put anything special in to wear down the teeth of my saltwater puffers - but that may be because of some things I am doing anyway.
For one, I always use some type of tough shelled shrimp when they get big enough. A young dwarf puffer may only be able to handle mysis, but when he is maybe two and a half inches they can begin taking down half a piece of krill, usually! Shrimp from the grocery store are okay, but usually WAY too big - the smaller 'popcorn" kind usually don't have shells.........Especially the blue spot will be food aggressive and every other way to be aggressive, too - VERY aggressive for a dwarf, I have one at the store almost full grown I am haing trouble GIVING away!
Anyway, cute litle fish, though. Also, with the liverock, seems to me they are always trying to rasp something off of it, some little stomatella or somethin', so I bet they're wearing them down that way, too.
You know me, Carmie, I always keep my puffers in my reefs, so there is plenty of little snails and stuff coming in on the corals for them to chew on.
Guess you can always buy some stomatella off someone who is breeding them - but I think that is probably really unnessasary............worst case scenario if they ever got too long they can be put to sleep and filed.....but I don't think it will ever get to that if you get him on a shelled shimp part time and have liverock -
Kudos to you for a varied diet! Also give him clam meat and fish flesh, he will like that, too! | 
