I just noticed something is eating my staghorn. I don't think it is flat worms but might be. I pulled all my sps out and treated for flat worms and treated the tank about 3 to 4 weeks ago. all my acros look fine. just this stag. It looks like a trigger taking bites out of it but I only have tangs, clowns and blinnes in the tank, unless a blue spiney lobster would eat corals.