Think it is hard to say.... I'm amazed at how fast SDguys changed... I've had a trio that one started to change to a male about six months ago. However his dorsal fin has gotten very long and his is the dominant fish but his colors have not changed. Guess he is not in a big hurry. I added another female last week to try to get him to speed up the process. I had the trio for about six months before the one even started to change to a male... Good luck with yours.
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