[bulletsworld]

I had it happen to me long time back with bristle worm attacks. I had a lot in my tank at the time and one large bristle worm that would come out, would slide by fish when they were sleeping OR would come out when there was food in the tank and the bristle worm was reaching for the food at that exact time as the fish. I even had a bristle worm wrap around one of my blennies. I removed the rock, later removing him.

My regal tang had the white fiber glass shards (thats what it feels like) sticking in his side. At first I tried to remove them with tweezers but they break off without all coming out and the stress to the fish to you & the fish is HUGE! If you have ever got them in your hand, they dont come out either, you just scrub hard with a brush on your hand. Evenually the fish rubbed and it went away. The next time I seen on my Yellow tang with the the same thing happen, I left it and evenually it disappeared. I would leave it, however, remove the bristle worm.

Hope that helps.