1. Change the water once a week. Don't change the water too often.

It is suggested to raise some aquatic plants in the fish tank.

It is suggested to buy a heating rod and adjust the water temperature to 24~26 degrees.

4. Sprinkle some salt every time you change water to prevent diseases.

Feed every day, otherwise the small fish will be weak and die. 6. If you use tap water when changing water, you should expose the water for three days.

7. Proper sunshine, one or two hours a day is enough.

8. The water temperature should be constant, not always changing. Small fish are weak, and they can't stand the temperature difference exceeding 2 degrees when changing water.

9. Small fish can be fed chopped water worms or broken egg yolk. Although egg yolk is ideal, it will pollute the water quality. It is recommended to feed less.