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 for food and competing for food. They swim naturally, leisurely and live in groups, with clear, transparent and elegant tail fins. Fish that sink to the bottom, float their heads, stand upside down or swim in a struggling state, fish with trauma, desquamation, long white hair and white spots, thick and turbid tail fins, severe bloodshot eyes and dull eyes, and live alone are all sick fish, no matter how much they like them.
Just learning to raise fish has a process of skill accumulation. You don't have to choose perfect fish, but buy cheap fish and healthy fish, which must not be ignored. Especially in winter and early spring, you should choose goldfish carefully, because there are many sick fish at this time.
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 they want you to 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 tanks 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. When the goldfish gets home, don't rush into the tank. Put the plastic bag containing fish in the fish tank 10 to 20 minutes before opening it, so that the water in the tank can be poured into the bag several times and gradually mixed with the raw 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 significantly change the water temperature. 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. 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 dissolved oxygen in the water is also low, so feeding fish may lead to serious hypoxia in the water and kill fish. That's why most dead fish happen at night.
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, it is necessary to install a filter, remove the wrinkles and residual bait at the bottom of the pool every day, and replace one tenth of the old water, 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.
It's best to start with wenyu goldfish. The cultured goldfish have strong foraging ability and strong physique, and are not easily injured by accidents. Raising precious fish after accumulating experience can reduce losses.