I've had quite a few of these in my tank & not sure where they came from.  As far as I know they came in with some of my original lr.  Today I noticed that one was on a leg of my sand sifting star.  While doing a water change I decide to just scoot him off of the bigger starfish and dicovered that it was actually eating it!  There is now a good size chunk missing out of the leg of the sandsifter.  As long as they have both been in the tank, I've never noticed this & actually don't think that it has happened before, has anyone else experinced this?  Also, what can I do for the sandsifter now?  Any help would be appriciated!
								 
				 
 
		