what do you feed them?

Betta fish will eat all sorts of food, but the best food for them is either food formulated for bettas, or worms.

many places like walmart sell freeze dried bloodworms, which my bettas love.

DO NOT OVERFEED YOUR BETTA.

many people think that overfeeding them will make them get bigger....

yeah, their stomaches will!

but most of the time they eat till they are full, then the leftover food will just sit and rot.

and smell!