Fungal or bacterial? Please help a gorgeous fish

[Devzev]

I picked up three ignots from a local hobbyists
One of them doesnt seem to be doing so well
Some white by gill and tope of the head
Hanging out at the bottom etc....
Please take a look at pics and advise

(125 gallon tank with normal parameters)

 

[FINWIN]

Need more info

How is the fish doing now? Is it with the others?