Naso tang black spots

hey I got a naso tang about 2 weeks ago i have been feeding it frozen brine and cheato from from fuge and it seems to be eating fine...but recently noticed little black specs on its body??? not sure what it is but think maybe black turbellarian worms or black ich......never dealt with this before... appreciate any help in treating it>>>> thanks

 

The first thing I would look at is it's diet, which could be greatly improved. It needs a ton of quality veggies, which should include red, brown, and green seaweed sheets, frozen algae mixes, spirulina, and raw broccoli. Switch the brine out for mysis.

 

yea I tried green nori and flake food but it wouldnt touch it.....It only eats the cheato and brine (that is enriched with vitamin C)....but ill try broccoli....