No.
Surprisenly I had 2 male betta in the same 150 gal tank with other fish and had no problems. Other fish included gouramis,tetras,angels,cory cats
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
She breeds with a male Betta Fish.
None are recommended if the Betta is a male.
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.
No. Betta fish will attack each other no matter the sex.
Yes they will.
The Betta fish want to kill eachother. That's what all Betta fish want to do, that's a natural thing.
No.