Originally Posted by bettafishfins
I'm positive it's a female. She has a white egg spot. I believe that's how you tell. Am I correct?
Not necessarily the white spot can also show on young males.
Males have longer ventral fins.
Males i think have shorter bodies than females, Females tend to have longer, rounder bodies, while males have shorter, flatter bodies.
Male Bettas as a whole have longer fins, while females have shorter fins. Although, PK males do have short fins, while some females can have really long fins.
I hope what i have said is right, if anyone wants to correct me please do so, i wouldn't like to give false information.