in the upper layer? Goldfish don't like to move in the upper layer, because the upper layer is more easily frightened. Goldfish are timid and generally do not go to the upper activities. The lower layer of water pressure is relatively high, and the temperature will be higher than the upper layer, goldfish is cold water fish, do not need a high temperature, so generally will not go to the lower layer. The goldfish likes to move in the middle layer most. If it is always in the upper layer, it is likely to lack oxygen. You can see if the goldfish will float its head. It is also possible to eat too much, you can observe whether the belly of the goldfish is getting bigger. It is also possible that the air pressure is too low, for example, when the weather is hot or rainy, goldfish will also move to the upper layer.
1, if it is because of lack of oxygen, you can first try to change the water, increase the dissolved oxygen in the water. Turn on the oxygen pump, and the goldfish will return to the middle layer in about half an hour.
2. If you eat too much, you can let the goldfish recover slowly. If the situation of overeating is serious, you can feed some digestive medicines. This situation can be recovered in half a day.
3. If the air pressure is low, oxygen can be increased appropriately to reduce the indoor temperature as much as possible. You can also try to change a new environment for goldfish. But the sudden change of new environment can easily lead to goldfish discomfort, unless absolutely necessary, it is best not to change.
