To get a good breed of Betta, first choose fish that its tail wide and thick, the shape of the tail 180 degrees, long and has a great body. Choose ones who always play in mid or bottom of the water (not on the water surface).
For spawning, you don’t need a big tank for Betta, a small aquarium, bowl, jar, or plastic bucket will do. Clean the jar well before used with clean water, to prevent fungus and diseases. Water should be precipitated and aged 3 days prior used.
When the tank is ready, put the male Betta first in the tank, and let he make nests of foam. When the foam was visible on the surface of water, put the female in. In 3-4 days, females will produce 200-400 eggs that are fertilized by the male.
Remove the female from the tank so that she won’t eat her own eggs. While the male still left inside the tank for the process of hatching, give the male enough food so that he won’t eat the eggs. Once you saw an egg hatched, remove the male from the tank. At the age of 2-3 days, the little ones do not need to be fed because their body contain egg yolk. In day 4, feed the fish with infusaria or plankton that can be purchased at the aquarium store. After the age of 1 month, the little ones need to be separated on their own such as in a jar or bottle for growing, as they are now can fight each other.