I am said friend. Pretty sure he was dealing with marine velvet. I guess the question at hand is should he take the fish to be treated or purchase something like a UV filter. I just learned about this disease yesterday and after reading up on symptoms, I think that is definitely why I lost a few of my long time fish recently too. Not blaming a store imparticular, but I think the wholesaler was the cause of the problem and a few fish stores shop there. I just heard mention of velvet in some other post and also a few people losing alot of fish quickly all points to Velvet. As far as the fish selection they have all been pretty small in size, and we always had a larger tank to put them in if they got too big. Maybe he did jump a little fast in the beginning but it was based on someone elses advice with starting with cycled everything. It made sense to me because it seemed like just a tank move in my eyes. Anyways thanks for all the advice we'll see if we can't get this straightened out and keep him going.