All clownfish are born male. When existing females die, however, they can change gender and become female.
Changing gender is a NATURAL thing. It happens in many species, including human.
And it could happen permanently or temporarily with your main or secondary characters, whether they are human or alien or other.
And if gender doesn’t have to be static, well, just about anything else regarding your characters can be fluid.
As long as it makes sense for their character arc and the story.
We have creative flexibility, my friends. Exercise it if the story needs it.
(smiles)
