This is very common with Butterflies and large angels and known as Lymphocystis. Lympho is a condition and not disease. Often its associated with water quality issue as simple as elevated ammonia or nitrate and can be that of water from LFS and not yours. Assure to provide Good water quality monitored by a reliable test kit and feed nutritious food with fats such as LRS nano frenzy and mysis shrimp.
Thank you that is relieving. I appreciate the help.
The white growths on the edges of the fins is Lymphocystis, a viral disease this species is prone to. It may get worse, but it will go away on its own in a few months. The scratching may not be from this though - this species is also susceptible to Neobendenia flukes, so watch for cloudy eyes developing.
