I had a Blue Velvet Damsel. It was a model citizen for about a year. Then one day it went on a rampage and tore down and ripped up every soft coral, polyp. LPS, SPS - well, you get the idea, anything that wasn't solid rock. Just a warning. And when they get bigger they lose that beautiful color. I took it to a local pet store and it stayed in their tank for over a year then someone took it. Also, they get much bigger than other damsels.