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[Magpie]

If one of the original wild caught predecessors was an intergrade that looked like a coastal, I'd assume it was possible to get a throwback to the diamond patterning. Maybe it would require the genes be in both parents but it's always possible the parents were related too. :roll:
I have an intergrade that came from the wild. She looked like a coastal to start but is getting the diamond colouration but with coastal patterning. See my gallery if you are interested. Does yours look like a true diamond (ie with diamond colour and pattern?)
I would say if it started life looking like a coastal but changed to look like a diamond, it must be an intergrade as all the diamond hatchlings I have seen look like diamonds. But I haven't seen that many and am not a diamond fan so don't know much about them.