I just looked at my smallmouth bass and he has a white eye with a thin red ring around it and the pupil being light blue-grey. He just developed it And I'm worried about the fish since it would not eat yesterday and will not today. what should I do? It is only on one eye. Also I have a bullhead catfish in the tank, so what do I do for the medication since I've heard that catfish are sensitive to meds, and bass are sensitive to certain types of meds.