If you have no scaless fish I would add some salt to the tank.
You really need anti internal bacteria med by interpet with the popeye and pimafix.
Yes move the affeced fish and do some water changes on main tank to dilute the bactreria down.
You really need anti internal bacteria med by interpet with the popeye and pimafix.
Yes move the affeced fish and do some water changes on main tank to dilute the bactreria down.