Thank you both for the ideas. QA I think you're right on with it being mouth and fin rot. That's exactly how I would describe it and when I googled pictures it looks a lot like my fish.

I have been feeding them and they are eating well so I don't see why I couldn't get them to eat medicated feed. teehjaeh57 I'd be interested to know where you got yours from previously.

My local fish hatchery recommended adding a few bags of salt to help the fish with their slime layer and fight off the infection. Anybody ever heard of that before?