To feed betta fish, you can add some red worms or frozen red worms to the feed. Red worms belong to living feed, so this feed should be sterilized before feeding fish. High concentration of salt water or high concentration of potassium permanganate can be used to soak it for about 15 ~ 20 minutes. Frozen red worms need to be completely thawed before feeding to prevent indigestion of betta fish. Red worms have high nutritional value and are beneficial to the hair color of fish, but they can't be fed for a long time, or only this kind of feed, because red worms are rich in protein, calcium and other nutrients, but their nutrients are still very simple.

Live bait mainly refers to water earthworms, bumper shrimps, water fleas, red worms, blood worms, mysis shrimps, rotifers, hooked shrimps and so on. Daphnia can be divided into dark Daphnia such as red and brown and light gray and light green Daphnia. Dark water fleas should be cultured in turbid water containing some microorganisms or organic matter, and can also be cultured in river water or pond water.

Light-colored water fleas need unicellular algae in water, that is, they need to be cultivated in green river water. The vitality of water earthworm is tenacious, but it requires higher oxygen. Blood insects are mosquito larvae, which hatch into mosquitoes in 1-2 days or 2-3 days, so they can only be bought and used now, or frozen in ice water. It is necessary to have enough zooplankton in the cultivation of shrimp in good years.