No they would kill each other in less than a minute
yes betta fish have to live alone or one will kill the other.
Male betta fish are typically aggressive and territorial, so they are best kept alone in a tank to prevent fighting with other fish.
Any.
Yes it can
Some male betta fish are not as aggressive as others.
male
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.
yes
Male Betta's are solitary. They cannot be placed with other fish. That's why they are known a Japanese fighting fish. They will kill other fish for territory.
None are recommended if the Betta is a male.
She breeds with a male Betta Fish.
No. Betta fish will attack each other no matter the sex.