Bettas have upturned mouths and primarily feed on the water's surface. A good diet consists of dried bloodworms, brine shrimp or daphnia. Commercial Betta food or pellets are best because it combines all three foods, in addition to vitamins and minerals. This improves the Betta's brilliant coloring and longevity. It is a common misconception that peace lilies or plant roots grown out of "Betta vases" can sustain the fish. Nothing could be farther than the truth! Bettas cannot survive on plant roots and need a diet high in protein and fiber to survive.