I GOT HIM AT CHRISTMAS TIME, HE IS ONLY MAYBE 2-2.5 INCHES. THE DEALER SAID TO WAIT UNTIL HE IS AT 3INCHES. BUT I AM PISSED CUZ I REALLY WANTED A MALE!
Color is not a great way of telling gender. Does he have eggspots? Longer fins? These can indicate male as well. The best way to know for sure is the vent him.
http://www.fishhead.com/articles/ventsex.htm