White fuzzy spot tang

[Alexandru24]

Hello. my yellow tang have a fuzzy white spot on the tab. you may have? is it serious? Let me note that I received so bought online. I already have 7 days and if it has increased a little stain. aquarium has 120 g, water parameters are ok (No2 0, No3 2.5, KH 10.2, PO4 0, PH 8 NH4 0). thank you!

 

[Alexandru24]

I attached a picture

 

[Tanthaitrung]

Welcome to Reef Central. You are talking about fuzzy white spot in the middle? If so, it's normal. All yellow tangs have these

 

[Alexandru24]

I said at the top