This single zoa was found in a colony of faded out zoa's I bought hoping for a nice coloring up. This one looked different so I fraged it alone. Its outer ring is getting real yellow,center is becoming almost black with a mouth that was greenish and is now going yellow . I am happy the way it is but hope I get yellow/black/yellow when it completely colors up. Only time will tell,thats why I love buying bleached out zoa's. ;D
