So I have a mimic tang. I love the yellow it brings to the tank. I am also excited that one day when it matures it will change coloration. It is peaceful with my other fish, I definitely love this fish. Question is...... I recently read there is more than one type of mimic tang?? Mine just has some orange by the gills. Also about when do they begin to change and how long does that process take? Mine is about 4.5" long now. Thanks for any input 



