Breeding bettas is very time-consuming. You let the male view the female for a few weeks, she'll get eggy, and hopefully he'll make a bubble nest in his tank. Then when she's ready, you move the female in. They mate, the female sinks to the bottom of the tank and appears to be dead - remove her when she recovers as the male will try to kill her, and she'll eat the babies. The male will now pick the babies up off the tank bottom, and put them in the nest. You then leave the male with the nest for a short time (Cant remember exact time length, think it was longer than a week though)
Then, you remove the male, and let the fry grow - feeding them appropriate food. You move the fry when they are old enough to a grow out tank, minimum 20gal, then a few weeks you'll have to seperate ALL the male fry when they start fighting.
Each male fry should go into a new tank, on its own - but able to see the others. At about 11 weeks, you'll be looking at selling.
That means ALOT OF TANKS. So it's not worth the hassle. 1 male fry = 1 tank. And god knows how many males you'll have
I think I remembered this correctly,
feel free to tell me if I havent, any of you expert people