Female Bettas, as opposed to males, can be kept together in a tank. Most communities range from 4-6 female Bettas. Females are not nearly as aggressive or territorial as males, but they are still much more aggressive than your typical fish. When introducing female Bettas to a new community, it is normal for their to be fighting and posturing. Females are very hierarchical, and a chain of dominance must be established. Once the fish “know their place” the fighting generally calms down. However, there are times when personalities just do not mix.
Avoiding Betta Fish Fighting in All-Female Community Tanks
If, after a number of weeks, you still notice fighting, you may choose to separate the fish as they may continue to fight until they are no longer in the same tank. The mating season is a particularly aggressive time for females, so this is a time when you really want to watch them closely for unnecessary fighting behavior.
A Word on Male Betta Fish
No matter how much we might like to, there is just no safe way to keep two male Betta fish in the same tank. They will fight for dominance, and will fight over territory. Pairing up two male Betta fish in the same tank is a recipe for disaster, as the fighting will continue until one fish is injured or even killed.
Avoiding Fighting During Breeding
Males are quite aggressive around females too, and thus Breeding betta fish is a slightly more complex process than that of other fish. To avoid Betta fish fighting, take the time to learn the proper breeding techniques. Be sure to keep the male and female fish separated until it is time for the actual mating ritual to begin. Once the female Betta has laid her eggs, she needs to be removed from the tank with the male as soon as possible. Leaving her in the tank puts her at undue risk for aggression from the male Betta fish.
Fighting, while it may be an impressive and beautiful display, is very stressful for Betta fish. To keep their environment as stress free as possible, keep in mind these general rules of thumb. When care is taken, Betta fish fighting is not a problem – this will lead to a healthier and longer life for your Betta.