1. When buying loaches in the vegetable market, you should pay attention to whether there are a large number of dead loaches in the containers filled with loaches. If there are many, it means that loach is not very fresh. Choose loach in a container with little foam and clear water quality.

2. After buying the live loach home, wash it with well water first, then put it in a bucket and soak it in well water for about 2 hours. Be careful not to use tap water, because chlorine in tap water will lead to the death of loach.