I don't claim to be an expert in breeding betta fish. All I've done is gathered information I've researched regarding the breeding of these beautiful fish. In my research, there have been really fascinating things that I've discovered about how to breed betta fish. For a start, you need a female betta fish. These are pretty hard to come by. But since you have one, you're good to go. Most petstores only stock the more flamboyant male bettas. However, if you search hard enough on the net, or ask your local petstore nicely, they will probably be pointed in the right direction. Female betta fish are pretty dull compared to their male counterparts. Some are pretty colorful but their fins are usually a lot shorter than the males. It is also possible to keep female betta fish together in an aquarium whereas you can't do that with males (in fact, you shouldn't keep the female betta with the male either - or anything that even looks remotely like a male betta eg fantail guppies - they will be attacked).
There are breeder packages on aquabid as well, they give you a group of foods you can feed for once price. Also Baby Brine Shrimp eggs, microworms, banana worms, walter worms are good. Decapped baby brine shrimp is good for new swimmers too (the egg shells are removed, you don't need to raise these). I just put my order in today and a local breeder is sending me some microworms. I dont even know if I'll breed yet! haha Good luck!
I don't reccomend using any small culture food like VE or MW. I used them for awhile but I refuse to now. They have no nutritional value....your fry won't grow very well on them. IMO BBS is the best food and mix in a little egg yolk and you'll get some nice growth.
There are a few ways to feed egg yolk. Nowadays many prefer to dilute them in water and use a small spray. I don't use this method because the spray often jams. In the old days people squeezed it through cloth so the egg yolk would breakup into small particles. I simply take a small pinch and dilute it directly in the tub/tank.
Too much leftovers will spoil the water. But if you give the right amount, it shouldn't spoil the water. Besides, partial wc will take care of it.
@MrV. : As far as I know, worm type of food contain more fat. They tend to boost growth more than shrimp like foods which makes them more .... compact (?)....... I wouldn't say worms have little to no nutritional value.
Yeah I wouldn't go around spouting unfounded stuff like that. I know plenty of breeders producing excellent fish with a start of VE or MW. There's way more evidence that starting BBS too early can cause issues so a small worm food is a great choice for the first 7-14 days.
As you can see...lots and lots of different ways to spawn and rear fry...lot of choices, opinions, opinions based on personal experience, fact and myths...etc.....lots of rights ways to do this...its finding what works best for you, your breeding and what you have available to you...it can vary from spawn to spawn even with the same breeders.....