he is unaware that you just let a another fish in and wants to attack her for his territory,but if he starts making a bubble nest that means he is ready to spawn(mate) so put her in
Male Betta fish will attract a female by flaring and showing off their long flowing fins.
it got in a bad fish fight or it is about to die from a disaese
Np, but they will bite. Yes, they will fight to the death.
yes
it looks like they have a big bubble in their side
She breeds with a male Betta Fish.
No. Betta fish will attack each other no matter the sex.
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
No.