Almost any kind of fish can live with a female betta, as long as they are close in size. Female bettas are not aggressive like males, so you should be able to put a few in the same tank without a problem
You can introduce other fish to your exsiting female Betta fish, but that requires prior research on the behavior of the specific species, for instance, males are generally territorial and should not be housed together with females.
Yes. Betta Fish do change their coloer every now and then. Or if you have a male, he will change his coloer if hes chaseing a female Betta Fish. Or if he sees another male Betta Fish.
Np, but they will bite. Yes, they will fight to the death.
Only female Bettas can be kept together. That too will only work if they are given reasonably roomy conditions and plenty of cover (plants) and hidey holes. Male betta fish can/ will fight to death if there is another male fish in the tank, a male will sometimes eat a female so your best bet is to have a single betta or a female and a female.
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.
no because the male and femalebetas are the type of fish that live alone. therefor since their opposite sex then there is a chance of them being OK with each other, so if there is another fish with them then they will attack it and eventually killing each other.
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.
the female betta fish are released from a vent while a male embraces her