Looks like ick?

[Jaketit]

It's only on his fins so far, hopefully you can see it in this picture. I'm kinda scared because I'm sure I'm gonna have to take half the rock out to get him. All the other fish so far don't have a spot on them.

 

[Jaketit]

 

[Trevred97]

Yep. I had an oscar and he got ick too. It started on his fins and his fins started to peel to where I could see some bone. Then his eyes got covered and he couldn't see anymore.