festae and carpinte both get black on the dorsal whether or not it is a male or female.
male and female festae have distinct features that show the sex.
just by looking at a female festae you should know by the dark
patterns on the body.
males have blue on their fins and females have more dark shades on them.
females also seem to look a big more red.
this festae does have some blue but i'm sticking with female.