+1 , 3 females would be best. You should decide if you want indo or maldives variants tho.
Well to state the obvious their collection points, but they have different colors as well.
This thread has a fairly documented case of females turning male and picture of both variants. I don't think behaviorally there is any difference between the two variants. Mostly if you want a purple male or a red one.
http://www.reefcentral.com/forums/showthread.php?t=972936&page=2&highlight=lyretail
He's really starting to look good!
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