Anyone Keep Box Fish?

[Treebeard]

I have had a yellow spotted box fish (Ostracion cubicus) for about 18 months with no problems. I think these are one of the easier species to keep. His more aggressive tank mates are a keyhole angel and yellow tang, but they all get along merrily.

A few months ago I tried to add a scribbled boxfish (Ostracion solorensis). He seemed to be doing well at first, but one day I came home and could not find him. After removing several rocks I found him dead. The tank suffered no ill effects, but it was very disappointing to lose such a beautiful fish.