Goldfish are cold-water fish and are not afraid of cold. Their body temperature changes with the water temperature and they can survive in water temperatures of 0-39 degrees Celsius.

Goldfish is a variant of crucian carp, with many types and large differences in shape. The heads are larger, including flat heads, lion heads, goose heads, pompom heads, etc., and there are many tumors on the heads. Protruding eyes, enlarged eyeballs. There are many kinds of scales, including transparent scales, pearl scales, etc. There are many body colors, including gray, red, black, white, blue, mottled, five-flowered, etc.

Goldfish have been living with humans for more than ten centuries and are the earliest species of ornamental fish in the history of the world. Goldfish is easy to raise. It has a strange appearance, brilliant colors, golden yellow and beautiful shape.

Goldfish can beautify the environment and are very popular among people. They are ornamental fish with Chinese characteristics. Goldfish was mainly developed from crucian carp, and colorful carp received great attention after being introduced to Japan.

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Life habits

Goldfish have strong adaptability to water quality, have a certain ability to tolerate dirty water, and are also relatively resistant to acid and alkali, pH ( pH value) can survive in water quality of 5.5 to 9.5. Alkaline water quality is more suitable for goldfish growth, but the alkalinity cannot be too high and the pH value cannot exceed 8.5.

Goldfish have a wide range of food habits and are omnivorous fish that mainly feed on animal food. They require food rich in protein, fat, carbohydrates, various vitamins, inorganic salts and trace elements.

Goldfish eat bread crumbs, rice, vegetable leaves, dried shrimps, meat, etc. Goldfish prefer live food, and goldfish raised on live food grow better.