I was wondering what this is on my sailfin tang? It does not affect him, he is always HUNGRY and i have yet to see him scratch. Please let me know. I tested everything in my water and it is great! calcium, ph all the stuff I could think of. ph=8.4 temp=79 day =77.5 night salinity is 24-25. PIcs wouldnt attach so i linked them below.. Almost looks like a white rash?:help:
thank you ahead of time for all of those who help!
I have to agree with Jadinop...oodinella or ich type parasites. Tangs can be quite susceptible. I would think about taking him out and treating him in quarantine if you can. Much easier and safer than treating the tank. If that isn't an option, then something non-copper based like No-Ich might be an otion.