Fish disease advice

[Krustykrab]

I purchased a small captive bred orchid dottyback a few weeks ago and it is in my quarantine tank. Over the last few days it’s pink coloration is fading both sides front half of fish and now there is one white spot on left. Fish eating and active and the one other fish in the tank is fine. I have been very lucky and have no experience with fish diseases. Any ideas? Thanks.

 

[Kensington Reefer]

Wow, sad
As long as it eats, recovery is possible
High quality frozen food, several times a day.
Keep the environment clean
Vacuum out any uneaten food
Where did you purchase the fish?
Is it alone in the QT tank?