A male betta can live 3 to 5 years when cared for properly. This may seem less when you own the fish, but this is due to the fact that male bettas are usually a year old when you buy them in a store because they are not sold from breeders until their fins fully develop
Yes
yes betta fish have to live alone or one will kill the other.
Yes it can
Any.
A female betta has very small fins with a long body while the male betta have lots of nice flowing fins.
Only female Bettas can be kept together. That too will only work if they are given reasonably roomy conditions and plenty of cover (plants) and hidey holes. Male betta fish can/ will fight to death if there is another male fish in the tank, a male will sometimes eat a female so your best bet is to have a single betta or a female and a female.
No. Male Bettas will not tolerate another Betta in its vicinity.
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
No, you should never keep a male and female betta fish together for long time periods. They should only be put in the same tank for breeding purposes and then separated after.
A normal length for a fully grown Betta male is around 2 inches excluding the tail fin.
This is the LAST thing you want to do! Putting a male betta fish in with another male is horrible because male bettas will fight to the death...not good!
Male betta fish are typically aggressive and territorial, so they are best kept alone in a tank to prevent fighting with other fish.