I love my harlequin shrimp. He did a great job cleaning up the Asterina star fish in my tank. Although in my 120, there are still Asterina stars that he has not caught. He was already showing signs of being hungry. Basically meaning he could not find all of them in my 120. So I supplement with CC starfish leg. Took me a week to get over the thought of it, but he is happy and hiding again. In the mean time, when I do find an Asterina, I move it towards his cave or just pluck it and move to my horse tank for later.