What do betta fish need to live?

food and water. I feed mine 6 pellets of food and keep him in 2 gallons of water.
Beta fish are actually quite easy to manage. Typically, a beta fish should be fed pellets that are specified for it, it should be given these pellets either once or twice a day. You do not keep your fish in a filtered fish bowl; you can keep it in a regular fish bowl. If you do keep your beta fish in a regular fish bowl, I would suggest cleaning the bowl at least twice a month.