Does my tang have parasites

[ongquang21]

The thing is how to get the fish.
I trusted the seller too much so I introduced it to my DT tank without quarantine. The tank is 290g with full rock and coral. I have to figure out the best way to take the fish out.

Originally Posted by gregzz4

DO NOT start overfeeding your tank until you know what is going on. If it's water quality related, overfeeding could make it worse.
I realise you recently acquired this fish so it probably has nothing to do with your water quality, but don't pollute your tank just yet.

I see the trailing bits you are talking about and agree it's definately not anything bacterial/viral.
Looks more like some kind of anchor worm or parasitic isopod.
If you can, I'd suggest you try to remove one with tweezers for inspection with a magnifying glass or microscope.
Sure you'll stress the fish, but I'd be concerned about getting it under control as soon as possible.