Jason McK had one.. you should talk to him.
Saw this on Wet Web Media. thought it would help
Yellow boxfish feeding- 2/3/04
Hey! <Hiya>
Just a quick question, I have just acquired a yellow boxfish and I haven't noticed him eating yet, he ate at the store. <What did they feed at the store?> I feed my fish tetra marine granules, which sink to the bottom and I read that boxfish are bottom feeders so I didn't see a problem with that. <Well, good theory, but if they aren't eating it yet then time to move to something else.> I was wondering if there was something else I could try, I have never had a problem with fish eating the granules but I understand that boxfish have a specific diet, <correct. When first introduced, the Cubicus Boxfish prefers a diet of live brine shrimp or bloodworms. Once acclimated, the diet should include chopped squid, clams, mussels, and herbivore preparations.> I have bloodworms but am leery about using them because I heard that they could harm my Tang, <Here are some links with some information regarding your fish:
http://www.marinedepotlive.com/783554.html and
http://www.liveaquaria.com/product/p...d=21&pCatId=81 and
http://www.wetwebmedia.com/boxfishes.htm
Any help would be helpful, thanks. Matt