Keeping goldfish well in winter should mainly pay attention to the prevention of water, food and fish diseases. The water for keeping goldfish will not deteriorate so easily in winter as in summer, so it is not necessary to change it so often. However, when the goldfish was found floating to the surface of the water and drinking impatiently, it showed that the water in the fish tank was out of oxygen, and the goldfish was barely maintaining life and had to replace some new water. Fresh water should be dried a few days in advance. The way to change water is to leave half of the water in the fish tank and add half of the new water. When changing water, the temperature difference should not be too large. If it is too cold, add some hot water. Feeding goldfish in winter depends on the water temperature. When the water temperature is low, feed less. When it is below 4 degrees, stop feeding. Food can be fed to dried fish worms, millet, sesame and fish, water worms and blood worms, or finished fish food. This season, due to the infection of diseased fish and water with germs, or the stimulation of water with excessive temperature difference, the incidence rate is high. After goldfish get sick, some don't eat, and some are covered with white moldy substances. Therefore, we should pay special attention to the cleanliness of water and the sudden change of water temperature. Once they get sick, they should take medicine as soon as possible. Generally speaking, careful feeding, proper management, attention to stocking density, fresh bait, qualitative and quantitative feeding; Mastering the change of water temperature and maintaining good water quality can raise goldfish well. Here are the basic instructions and methods that must be paid attention to in keeping goldfish for your reference. To raise a good fish, you must first learn to buy a good fish. For beginners, the first thing is to buy healthy fish. So how to choose a healthy goldfish? Healthy fish swim in the middle and lower water, foraging and competing for food. They swim naturally, leisurely and live in groups, with clear and transparent caudal fins and elegant posture. All fish that sink to the bottom, float, stand upside down or swim in a struggling state, have trauma, scales fall off, long white hairs and white spots, thick and turbid tail fins, severe congestion, cloudy eyes, dull body color and solitary fish are all sick fish, and you can't buy them again. There is a process of skill accumulation in fish farming. You don't have to choose perfect fish, but you must buy cheap fish and healthy fish. This cannot be ignored. Especially in winter and early spring, you should choose goldfish carefully, because there are many sick fish this season. 2. Before keeping goldfish, you should prepare a fish tank that is not too small, mainly depending on the size and quantity of goldfish you keep. Also pay attention to the density of fish. Novices often buy the fish they like when they see it, and rarely consider how many fish they can keep in the tank. Even if they ask the fishmonger for advice, can they say that you should buy less for the benefit? In my experience, it takes at least 3 liters of water to raise fish with a length of 1 cm. If your fish tank is filled with 100 liter of water, you can feed 3-4 fish with 10 cm and 8 fish with 5-6 cm. On this basis, the temperature in winter is low and the bait is less, so it is appropriate to raise more fish. Goldfish are more active in a larger space, and their body color is more vivid. Excessive density of water will lead to hypoxia and deterioration of water quality, which will lead to illness and death of goldfish. Remember not to be confused by the crowded fish tank in the store! Third, the fresh water of goldfish should be stored for one or two days, which is called "trapped water". On the one hand, it is to remove chlorine from water, and on the other hand, it is to make the temperature of new water and old water as close as possible. Fourth, buy goldfish must be oxygenated to avoid being suffocated on the way home. The goldfish is home, don't rush into the tank. Put the plastic bag containing fish in the fish tank 10 to 20 minutes before opening it. Let the water in the jar be poured into the bag for many times, and gradually mix with the original water, so that the fish can gradually adapt to the water temperature and quality of the new home. If there is a light, turn it off. In the dark, fish are quiet and not easily frightened. Five can't dramatically change the temperature of water (one of the purposes of trapped water). Goldfish can survive in a wide temperature range, and can still maintain life under ice in winter. As long as they are not exposed to the hot sun, they can live normally on a hot day. However, if the temperature changes sharply, they will get sick or die. When buying fish, pay attention to the water temperature of the aquarium and the water temperature of your own aquarium. The deviation should not be too big, generally within 4 degrees is allowed. Sixth, you can't change too much water at a time, otherwise the water quality will suddenly change, which will lead to the discomfort of goldfish. Goldfish has adapted to the original water quality. If the water quality changes suddenly, goldfish will get sick or even die suddenly. How to feed. Goldfish are kept at home for viewing, so there is no need to feed more fish food. Feed it once or twice a day and eat it within 5 ~ 10 minutes each time. If you can't finish eating, you should suck out the residual bait with a siphon in time, and you can't stay at the bottom of the tank for a long time. Feed less in rainy days and not at night. Because fish need to consume more oxygen when digesting food, the air pressure is low in rainy days and at night, and the oxygen dissolved in water is also low. In this case, feeding the fish may lead to severe hypoxia in the water and the fish will die. Most dead fish occur at night. That's the reason. According to the color of fish manure, we can distinguish the saturated digestion and absorption of goldfish hunger: if the fish manure is green, brown or black, it means that the fish is suitable for feeding and absorbs well. If the fish manure is white, it means that the fish is full, and the feeding amount should be reduced. Eight ingredients must be clean. Feeding unclean fish food can easily lead to fish diseases. Although goldfish like live food best, goldfish grow faster when fed live food, but live food grows in polluted water environment and is easy to be infected with germs, so be careful when feeding live food. It is recommended to buy brand-name frozen fresh foods produced by professional companies, such as red worms and bumper shrimp, supplemented by beans and vegetables, to maintain comprehensive nutrition. Breadform is also a favorite living food for goldfish, which has high nutritional value and can also be properly fed. Keep the water clean. Goldfish eat a lot, consume a lot of oxygen, and discharge a lot of waste to pollute water and breed germs. In order to keep the water clean, a filter should be installed to filter it out at any time. Every day, the wrinkles and residual bait at the bottom of the tank should be removed, and one tenth of the old water should be replaced, especially in summer. It is best to use filtration with aeration design, so that filtration and aeration can be carried out at the same time, which not only purifies the water body but also supplements oxygen. Do not bring oil into the water. Oil pollution will float on the water surface to isolate the air, so that the oxygen in the water can not be replenished, leading to the death of goldfish due to lack of oxygen. Eating meat or applying hand cream on your hands will bring oil into the water and should be carefully avoided. One of the purposes of raising fish is to cultivate the mind and nourish the nature. Instead of a whim, it is better to start with the cultured fish goldfish. The cultured goldfish has strong foraging ability, strong physique, little possibility of accidental injury and relatively low price. Raising precious fish after accumulating experience can reduce losses. 165438+ 10 month: the temperature is getting colder, and the water temperature is mostly around 10 degrees. Goldfish have a normal appetite and change water once every 20 days. Pay attention to the balance between old and new water temperatures when changing water, leave ornamental fish in green water as much as possible, and strengthen drug treatment for sick individuals. 65438+February: The temperature drops, and the focus of this month's work is the warmth and coldness of goldfish. The goldfish's appetite dropped significantly, and the water was changed every 30 days, and the feeding work was delayed until noon. The stocking density of fish ponds can be increased appropriately, the water color is mainly green, and the water level of open-air fish ponds should be deepened appropriately. 65438+ 10 month: This month is extremely cold, which is the coldest season in a year. Goldfish should keep warm. If possible, the goldfish can be moved indoors or in a greenhouse for the winter, and the water quality should be minimized. Feeding work should be concentrated at noon. February: In late February, the temperature gradually warmed up, and the feeding of goldfish was strengthened. The water quality is usually changed every 30 minutes. Choose parent fish, reduce stocking density, strengthen parent fish fattening, and make early preparations for parent fish reproduction. March: The average temperature in the south of the Yangtze River in March is about 10 degrees, sometimes higher than 20 degrees. With the temperature rising in spring, the rate of organic matter corruption in water supply is obviously accelerated. If the southeast wind blows for several days and the temperature rises obviously, it is necessary to replace the overwintering old water of ornamental fish in time to prevent goldfish from being deprived of oxygen. In late March, the gonads of ornamental fish have matured. If the water temperature is raised to room temperature at this time, goldfish will breed ahead of time. When the weather is clear, different kinds of goldfish are kept in a fish pond according to a certain proportion to prepare for nesting. Plagiarism thank you