No, they are fighting fish. They will kill each other no matter what sex they are.
it depends the species but most of the time...no. males are way aggressive. unless you are an expert aquarist i wouldn't
you can tell if its a boy or girl by the fins the male Betta has long fins and the female Betta has small fins
A girl Betta is dull and not as pretty as the male. But, a boy Betta is colorful and pretty to attract the female mate.
This is a BIG NO NO!! Bettas need at least 2.5 gallons of water to themselves, and if you put a male and a female together, it will most likely result with you have two dead bettas. Keep your boy and girl in separate 2.5 gallon heated tanks.
Yes.
A female betta has very small fins with a long body while the male betta have lots of nice flowing fins.
If it is a fantail betta, the boy will have very large, flowing fins. If it is a girl, the fins will be short and not very fancy.
It's all in the tail. the males is larger and longer and the females is shorter.
yes
Males are usually bigger and more colorful than females.
OF course.
No, they can live alone or with other female bettas. They might bite each other but won't kill.