Do you need oxygen tanks to keep goldfish?

Many friends will keep some goldfish, but they don't know much about their conservation knowledge. For example, do you need oxygen bottles to keep goldfish? You don't need an oxygen bottle to keep goldfish, but you should be able to bask in the sun and put it in a well-ventilated place. In addition, it is also necessary if: 1. If goldfish are raised with tap water, they need an oxygen pump. If some aquatic plants such as aquatic plants grow in the fish tank, there is no need to add oxygen. 2. River water or well water is used, but there are no aquatic plants such as long grass, and oxygen needs to be replenished regularly, so an oxygen pump is needed. 3, the fish tank is too small, there are many goldfish, the oxygen is obviously insufficient, and oxygen cylinders are needed. Finally, it is necessary to decide whether an oxygen pump is needed according to the specific situation.