I have a yellow-tail damsel in my tank that is a menace. The guy at my fish store said it was a good starter fish. He didn't, however, tell me that he would kill everything. He's killed 2 diamond gobies, a yellow belly damsel, 5 peppermint shrimp, and 3 cleaner shrimp in his tenure in my tank.
This is how I'm trying to catch him right now. I've also tried catching him by using two nets and tried fishing him out with a hook and piece of krill. Is there any other methods I can try? My next course of action will be to jam a knife into the hole he sleeps in.