I have a tank that had 2 clowns, a yellow citrus wrasse, a royal gramma, a bang ai, and a blenny. I believe they caught brook but it might have been velvet. After a few days of first visible symptoms they were all dead other than the yellow wrasse. It has been three weeks and my wrasse still has no symptoms. Are they resistant to the disease. I set up a quarantine that is at the end of cycling for the wrasse. But if a wrasse can not carry the disease I don’t want to stress him in copper for no reason. So can wrasse carry it? And if they do carry it, do the symptoms just not show for a few months longer, or are they asymptomatic but still carry the disease?