Goldfish is more suitable for group farming and intensive farming. However, the domestic density should not be too large.

Goldfish is a kind of temperature-changing animal, which has strong adaptability to water temperature. Its body temperature changes with the water temperature, and it can survive at the water temperature of 0-39 degrees Celsius. But goldfish can't adapt to the drastic change of water temperature, and the sharp rise or fall of temperature over 5 degrees Celsius may endanger the life of goldfish. The optimum temperature for goldfish growth is 20-28 degrees Celsius. At this water temperature, goldfish grows most vigorously, with the largest food intake, excretion and oxygen consumption, and is the most lively goldfish.

After winter comes, we should pay attention to moving goldfish indoors to ensure that the water temperature is above 5 degrees Celsius.

Goldfish has a strong adaptability to water quality and a certain tolerance to dirty water. But goldfish can't stand the rapid change of water quality, which may lead to illness and even endanger the life of goldfish.

Change one third of the water every day.

Goldfish has a wide range of feeding habits and belongs to omnivorous fish with animal bait as its main food. Food is required to be rich in protein, fat, carbohydrates, vitamins, inorganic salts and trace elements. Goldfish eat bread crumbs, rice, leaves, shrimp, meat and so on. Goldfish prefer live food, and goldfish raised with live food grow better.

Mix bait to ensure comprehensive and sufficient nutrition.

Goldfish is a docile pet fish, and there are few fights such as big fish attacking small fish. However, during pregnancy and childbirth, goldfish's temperament may change greatly and become fierce and aggressive. Therefore, goldfish during pregnancy and childbirth should be kept in separate fish tanks.