hi Koko,
I found another good article. This one is a list of foods for bettas. Can you put it at the top of the betta forum? thanks
I found a good list of betta food sources

A few foods to feed, so you get a quick answer:
These are foods I feed, I know there are more out there, but I'm too lazy to look em up

~ Hicari betta pellets
~ Peas as a laxitive or once a week preventitve *plus most betts love em *
~ Tropical fish flake: Not too many bettas like these, but there are exceptions
~ Betta flake: Even though it has a seafood smell, many bettas will gobble it up, as will other fish, convienetly crushed all you need to do is poke a hole in the tin cover.
~ Freeze Dried Bloodworms: not a great staple food, better left to a treat
~ Frozen/Live Bloodworms: I have heard no complaints from people or bettas about using this as a staple food
~ Brine shrimp: Although baby brine shrimp *BBS* has more nutritional value, adult brine shrimp can be fed as a conditional for breeding bettas.
~ Micro worms: A great baby food
~ Misquito Larve: Want all your fish to go nuts? this is the food for you! Newborn larve can be fed to older fry, and adluts will be greedly eaten by bettas and other fish.

There are many other foods, and brands, and types of foods that bettas will eat..But as the questions come up, they shall be answered further.

from Bettachris site