Hello my Cichlids appear to have problems. I have 3 bumblebees, 2 Electric Yellows, and 2 Peacocks. Yesterday I noticed that the bumblebees and yellows have started flashing but I dont see any white or black spots. Otherwise they fish are behaving and eating properly. I did notice that one of the bumblebees has a metalic silver on its gills. I cant remember if it was there a few days ago but cant find any info on it. Any ideas as to what this could be?