I have a large blue velvet damsel that is about 5 maybe 6 years old that I can not catch anyway I try. The stinking rascal doesnt bother any corals except zoas. He has eaten everyone I have ever put in the tank. The only fish I catch in traps is my false perc, the damsel hides the second something goes into the tank. I am ready to dissasemble the tank to catch him, I really do not want to but it looks like that is what it is coming to unles I can find a solution.