I have a blue devil damsel that is about 4 1\2 years old. In the past week his scales have started turning white in different spots it is not ich and I do not believe it is a parasite he is otherwise healthy and acting normal. It actually looks like a snake begining to shed his skin. Does anyone have an idea how long the life span of this fish is or what kind of problem this might be. When my wife gets home I will get her camera and get some pics and post them. He is the only fish in the tank with any problem and I can't catch him to QT.:hmm2: