Didn't occur to me that pics would be useful to other people; glad I can help!
As for meds, the fish are in a heavily planted quarantine tank, so I'm going to hold off for now and keep a close eye on them; I'd rather avoid further stressing their systems if I can. The fish is active and eating (usually the first one to get to the food), so I'll just keep monitoring for now and move them into meds if it doesn't improve.