those are flat worms. I had the same variety. I would suck one up in a turkey baster and let it go in front of a half dozen wrasses and they never touched them. They (in my experience) will only continue to grow in population. Not sure the size of ur tank but I would just get the exit and finish them off siphon out as many as possible and follow the directions to a T. good luck. Adding a fish is hit or miss. then you have a fish that you may not really want in your display
Last edited by daddybiggs; 06-22-2011 at 08:00 AM.
Reason: ADDED TEXT