No female bettas have the long flowy finns commonly associated with the betta fish. Some males that are a specialty type (Plakat(sp?) types) have short short finns exactly like a female but they are fairly uncommon and well labelled usually due to their rareness.
Usually when you get them from your local pet store, it says on the cup you got it from if its a boy or a girl. Otherwise, I am not sure.
Adult betta fish, specifically the males, will grow in the majority of their fins as juveniles. When you see bettas in the stores for sale, they are typically around 2 years old already since it takes time for their full finnage to appear.
Np, but they will bite. Yes, they will fight to the death.
yes
She breeds with a male Betta Fish.
it looks like they have a big bubble in their side
No. Betta fish will attack each other no matter the sex.
yes
Go to petsmart and ask a person there to show you witch is best for your baby betta fish.
Your betta fish is a female if she has smaller fins than an average male.
Yes they will.
The Betta fish want to kill eachother. That's what all Betta fish want to do, that's a natural thing.
the female betta fish are released from a vent while a male embraces her