Hi, I recently just added this Copperband Butterfly into my 120 gallon tank. We noticed he had one small dot on his fin, but it lightened the day after we put him in the tank. Now I can see a few dots on one of my clowns. Is this anything to be worried about? We are fairly new to this and are sometimes overreactors & are super afraid of the ICH wiping out our tank. Everyone is eating fine and no other abnormal behavior. Thanks in advance!