Why do goldfish look silly

Why goldfish look silly goldfish look silly because its eyes are large and do not blink, and the head is also large, looks more frothy. The goldfish does not know how full it is, the owner feeds it how much, the goldfish will eat how much, the slightest inadvertence will be burnt to death. So it is because of the silly cute, there will be a large number of fish veterans willing to feed, but feeding goldfish is not simple, in addition to the need to control the amount of feeding, but also need to pay attention to regular testing of feeding water quality and water temperature. Goldfish are susceptible to water pollution leading to disease, therefore, regular water changes are essential, generally 2 to 3 days for a water change, winter can be appropriate to extend the water change time, can be extended ten days or half a month for a water change.