Quote:
If they are only the size of a Nickle they are not yet mature, It's a rough estimation but 6-8month's is when they are mature fish, There will be no trouble if they are of the same sex, They are peaceful in temperament ,and you can trade them for mate's when you find out their sexes. What I mean by a nuchal hump is you will notice that the head is rounded, and the females will have a straight head.