Ive had one for about 2 years, he is everyones favorite fish. Tons of personality.
Mine sucks on the tubes of feather dusters, but otherwise havent seen him hurt anything.
During a feeding frenzy he has been almost swallowed by a large porcupine puffer twice and never released any toxins. He also had both of his rear horns bitten off by a trigger (which grew back) and had one of his front horns spilt by the same trigger. Its now growing in 3 directions
I get to post his pic again