Need alittle help on my Pet** Naso rescue ... is the the start of ich ?

Got the tang home and after he finished getting MASSIVLY stressed out, he started eating as normal. He ate anything he could get.
Today I came home and he is still normal as can be, swimming, eating everything. I noticed that he has little specs on his fins now (you can see them in the pics below). Is this the start of ich or something similar. He is NOT in the main tank but there is rock in there. My "real" QT has a MASSIVE red algae and diatom bloom so I figured he was beeter with the rock, than in there. Anyway, I can move him if I need to or I don't mind killing the rock and letting it regenerate itself. There is nothing in the tank other than him, some rock, and cc mixed with LS.
Any help is VERY appreciated !!!
 
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