Yes all bettas can mate with other bettas. " regular betta fish" there are different types and they can all breed together.
no because male betta's are really aggressive to other betta's which plakats are male's. but female betta's can stay with other females. don't try to, one of your betta's are going to end up dead.
Yes, but only one type of betta fish, which is the Plakat betta fish. Its not very common(rarely ever)but it is possible to turn out so. it could get short fins through being in a fight with another fish aswell but most people wouldn't like that
Np, but they will bite. Yes, they will fight to the death.
Determining the age of a betta fish based solely on its appearance can be challenging. However, you can generally distinguish between adult and juvenile bettas by looking at their size and fin development.
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 they will.
Your betta fish is a female if she has smaller fins than an average male.
The Betta fish want to kill eachother. That's what all Betta fish want to do, that's a natural thing.
No.