1, the bought fish needs to be put in a fish tank, otherwise it will die of lack of water.

2, feed, domestic fish farming generally has special feed, which can be bought online.

3, change the water frequently, help the fish change the water after a while, and let it get a new environment.

4, often wash the fish tank, the fish tank must be cleaned, do not wash the fish tank for three or four months, so the fish will get sick because of lack of fresh air.

Sometimes you can play with them when you are free, which is helpful for your growth.