for a few days. Goldfish are relatively hungry fish. If the owner can't feed them, even if it lasts for about a month, they can still survive on the phytoplankton and microorganisms in the water. But under normal conditions, goldfish should be fed regularly and quantitatively, so as to ensure adequate nutrition, strong body and reduce the probability of illness. Do not feed goldfish for a long time, although goldfish can still survive, but it is easy to cause malnutrition of goldfish, and cause the body color of goldfish to be dim. If they are not fed for too long, they will starve to death.
for several days. The frequency of changing water for goldfish varies according to the conditions of feeding. If the fish tank has a filtration system, it can keep the water quality in the fish tank stable for a long time, so even if the water is not changed for a long time, it will not cause too much adverse effects on the growth of goldfish. But if the fish tank does not have a filtration system, usually do not pay attention to feeding, the cleanliness of the water can not be guaranteed, then it is necessary to change the water in time, otherwise the goldfish will easily get sick because of water quality problems. Generally speaking, it is better to change the water every two or three days in summer, and slightly longer in spring and autumn, so it is OK to change the water once a week. In winter, as long as there is no obvious problem with the water quality, it is also possible to change the water once a month.
