Your betta is bloated what do you do?

Bloat in fish is usually caused by very poor water conditions (as are most fish diseases and problems). For the fish to get better, its conditions must be improved. I would advise you to make sure the fish is in acceptable conditions by observing the following. 1 inch of fish needs 1 gallon of water. A male Betta has about a 2 inch body length so he requires at least 2 gallons of properly filtered, heated (to 78F) water. A regular weekly water change of 50% is also recommended. Because fish tanks are never filled to the brim that means you would need to have a tank with a nominal capacity of at least 3 gallons. People who say that Bettas can be happy in a jam jar are talking rubbish and do not have the welfare/health of the fish at heart.