you can tell from the in larged stomach or belly
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 female betta has very small fins with a long body while the male betta have lots of nice flowing fins.
ya
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.
It's all in the tail. the males is larger and longer and the females is shorter.
if it can have babies, its a girl
Male Betta's do not have babies. The female lays the eggs, the male fertilizes them and then takes care of them in a "bubble nest" that he builds until they hatch.
Several hundreds
any where from 50-1000
Yes
No. A male Betta is needed to spawn out the female and fertilise her eggs.
No, the male should be kept with the babies. Once the babies are adults, the mother can live with the females.