Conditioning the Betta Pair
Feed the male and female as much as they can consume in a two minute period 2-3 times a day for two weeks. Make sure the fish are carded (have something preventing them from seeing other bettas).
Ready to Breed?
Ideally when your fish are ready to breed, your male will be brightly colored and will be blowing a nice bubble nest in his bowl or jar.
The female will be plump in the front with an obvious “white dot” on her belly right behind the ventral fins. Many darker colored females will show vertical bars when shown a male betta and they should flare at the male. If she loses color and tries to get away when shown a male, she is not in breeding condition and should not be set up to breed with a male. Some marble females will never show bars even if the fish is a darker color like blue. Light colored females will not show bars.