just found these marks on my blue tang, not sure what they are, a few white spots (looks more like bruises then ich), havent had a problem with ich, theres a different mark on his top fin which im concerned about.
i have recently had a problem with ammonia (it only went up to .25). no other issues with the tank. any idea what this may be, i am concerned?
tank mates - 2 clown fish, 2 starfish, hermits and snails.
250 gal










