Is it a good or bad thing? I'm noticing more and more Asterinas in the tank. Every liverock has on them. Theres different species. Some them are blue and others are a bit bigger but white. They tend to gather on the glass during lights out. Every morning I find more and more on the glass. I was wondering if a Harlequin shrimp would eat Asterinas. I dont want to add one to the tank if its gonna be a maybe, as feeding it with big live starfish is not an option for me . Another question is : Because the Harlequin is such a delicate creature, is it right to even add them to a big system like mine? I know they do great in Nano's etc. Advice would be appreciated!