Female. They are getting slightly bigger than the males. Anal fin goes to a curved point and is red
Male. Has red in the tail fin and dorsal fin with dark black edging on the tail fin and some on the dorsal. The anal fin has lost most of its red and see the bump that starts 3/4 of the way down the anal fin and makes the anal fin have a round end on it. The males cheeks and front of belly have a lot of red. Also you will see 2 dark spots on the shoulder area that look like this : behind the head one high and one low but parallel. They are not visible in the pic of the male I took. They are most visible in the am and fade in and out depending on their mood.
Sorry the pics are a little blurry they don't like to slow down for pics lol
They will all look the same, like females until they mature and the males will take on their differences. Now that is for the species I have other species may look different but that is the basics of them all I believe.