so got my yellow tang 2 weeks ago first week had a small case of black ick, my neon goby seemed to clean that up in about a week, no other fish were affected, so it seems. all my parims are in great shape since i keep more than a few corals. weekly water changes, regular feeding routine, all other fish are and always have been in excellent condition. i did noticed a lil rugged fins when i got him home over the first week the ick had passed and his fins seemed to be doing better. now nearing end of week 2 his fins seem to be getting worse? take a look at the pics what do you all think is wrong with him. He swims all day, grazes rocks, and eats whatever goes in the tank. very playful with the clowns,not lathargic at all. i did not do any treatments, im guessing it would be impossible to catch him. and treating the tank is not an option.