My Picasso did fine with 'shrooms and zoos. As I added LPS, he started nipping at them. I don't think he was hungry, just curious. But too curious repeatedly so he had to go. My absolute favorite trigger was my Fuscus! What a personality but he was a redecorator and didn't want anything in the tank to stay in the spot you put. So he moved everything he could, and beat to death everything he couldn't. So he had to go too. I currently have a Blue Jaw trigger and he's awesome, a model citizen with all the corals and other fish although a little more skittish than the Picasso.