male or female

I know some of them are peacocks, but I heard the white one might be to aggressive. If anyone has any info on this I would appreciate the input! I put a few images up and have multiple pictures of the same fish just so you could get a better look.

Hi guys, I haven't posted in awhile because I had no more fish! :( Got this fish from a friend on Friday! Yay! It looks to me to be 3 inches long already and she got it at petwhatever. Is it male or female? Much thanks, Patty