I do not understand what the Onyx color morph is. Are they simply just a morph of True Perculas, or do they come from a certian area of the reef. More over can these come from simply two True Perculas who may carry the color morph gene. I am curious because I own two wild caught true perculas and I'm wondering if they have offspring if one, if not more, could possibly be an Onyx color morph.