Ahhhh, here we are back on the topic of breeding. So many people say, "Hey-I have a pair of Bettas--I am going to spawn them and have baby Bettas." Too many people don't think this through. There are SO many things to think about with spawning! Do you have the appropriate tank for spawing and raising fry with a sponge filter and plantlife to provide the fry with food for the first day? Are the parents properly conditioned? Do you have microworms and baby brine shrimp to hatch out twice a day or more for them? Are you ready to do daily water changes (of water at the same 84 degrees) to keep the ammonia down as they grow so you don't have burned off ventrals and deformities? Do you have a larger (my min. is 20G long) tank to grow out the fry? It gets VERY crowded with 100-300 (sometimes up 500 even!)fry in that little spawning tank! Are you ready to have to change water daily in all those jars as the fry get bigger and aggressive? Will you have live cultures of grindal worms, white worms, and rich forzen foods like beef heart and blood worms ready to help those jeuvies grow strong? Assuming you get to that point and have kept up with your water changes enough to have healthy and non-deformed young Bettas at this point--what are you going to do with them?? Pet stores aren't allowed (by law) to buy the fish from you unless you have a liscense. Most stores will offer you credit--usually about 50 cents per fish. Yes, that's right. The common Veiltail betta brings in between 50 cents and 1$. Even for Super Deltas, Double Tails and Crowntails you will be lucky to get between $2.50-3.50 in store credit. If you start with top quality stock you might be able to get better prices by selling on Aquabids or the like, but not much better unless you have top quality show fish. Also know that certain "fad" colors bring in more money--if the form and finnage is good. In most cases, you are going to sink a lot more money into caring for a spawn then you will ever get back. It is a great hobby, but not a great business unless you have a LOT of money and even more time to devote to them.
So--go enjoy your Bettas!
Amy