FOOD FOR BETTA FISH : 1. Mosquito Larva

The best food for betta fish which I recommend is Mosquito Larva.

Mosquito Larva has a lot of protein which need for betta fish in their dairy life.
This is Mosquito Larva's picture :

If you cannot find Mosquito Larva for your betta , I will advice other food for betta fish later.
There are a lot of food for betta fish. You can find at least one of them at your country.