Catfish growing fur spot?

[Catfishmustlive]

Hello, reaching out to see if anyone can help me determine what is wrong with my new catfish. Recently I’ve noticed that it is seemingly growing a fur spot along the ladder half of its head that is rather alarming. I don’t know much about fish and was tasked to help my dad determine what is wrong. The tank is 72 gallons and sits between 78-80 degrees. The fish was recently bought and still has been acting normal, picture are attached. Any insight on diagnosis and treatment options would be greatly appreciated.

 

[Aiken Drum]

Please give as much information as you can requested from the "unhealthy fish" sticky.

https://www.aquariumadvice.com/forums/f17/before-posting-about-unhealthy-fish-read-this-32451.html

It looks like a fungal infection. Are you able to quarantine the fish?