Male betta fish are typically aggressive and territorial, so they are best kept alone in a tank to prevent fighting with other fish.
usually a male has longer tail fins but they are about the same for side fins
Male Betta splendens fight with other male Betta splendens so the answer is most other fish will not fight with a Betta in the same tank. To try to list every species of fish here would be impossible.
The male will kill the female after he spawns her. If she won't spawn he will still kill her. No male Betta will allow another Betta (male or female) to live in its vicinity. So the answer is NO.
yes of course well make them about the same size.Hope that helped.
keeping multiple bettas in the same tank is not reccomended
Female betta fish can last as lond as five years. But as always, it depends on how you take care of them. They need proper feeding, and they always need a clean tank at least once a week. This is the same for male bettas as well.
No. Betta fish will attack each other no matter the sex.
Male beta fish are very territorial. Two male beta fish cannot live in the same tank or they will fight. Male betas make bubble nests to mark their territory.
Yes. They are the same species, Betta splendens, just different types.
It's best to only put male and female betta fish in the same tank/bowl if you are breeding them. If they are not breeding and they still stay in the same area, the male would most likely attack the female, so keep the female away! Also, if you are breeding betta fish, make sure to remove the female betta after she lays her eggs, as the male will care for them and chase the female away.
You can NOT keep female and male bettas together! Male bettas can get very aggressive and will fight to the death. Make sure to separate your bettas.