Basic way to check betta fighter still aggressive or not
If put a male and a female betta fighter together in the same jar and within 5 minutes the male doesn’t bite the female even once, it indicates that male is not aggressive. Should never be taken to a fighting in arena. That fish or any fish from the same batch.
When betta fighters are in top condition and ready to fight, it may flare as soon as someone walks past its tank.
Why do betta fighter flare at us?
A healthy and aggressive betta fighter will often flare at moving objects around it. This is usually a sign of high hormone levels, good physical condition, and strong vitality. It shows that the fish is healthy, not lethargic or sick, and ready for a fight.
One thing to keep in mind with highly aggressive betta fighter is not to let them flare too often. While flaring is a good form of exercise, excessive flaring can make the fish tired, stressed, and potentially more susceptible to illness. Allowing them to flare for just 5–10 minutes per day is usually.
