I've had mine for probably two years now and it doesn't seem like he's eaten anything he wasn't supposed. I can say he's a pig though because he'll just about anything and everything aside from my corals
I would like to buy one to help with the algae control since I lost my blue tang due to 3 days with no power in that very wind storm.
I like the yellow color that is why I would like one, I had yellow tang before but it is to aggressive.