Vito corleone's friends and fish farmers for the first time all have the experience of dead fish, because they don't know this knowledge yet. Generally speaking, goldfish can be raised well as long as it is carefully raised, properly managed, with fresh bait, fixed quality, quantitative and regular feeding, attention to stocking density, control of water temperature changes and good water quality. Here is a brief introduction to the minimum instructions 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;
(A) How to choose goldfish
(1) Conditions of Excellent Goldfish
Beautiful appearance, well-proportioned body, short body and wide tail fin, and obvious variety characteristics;
Beautiful color, rich and beautiful body color, striking is that it has a clear sense of beauty;
Beautiful sports, steady and elegant swimming and beautiful appearance.
(2) How to choose healthy goldfish
Healthy fish swim in the middle and lower water, foraging and competing for food. They swim naturally and leisurely, live in groups with other fish, and their tail fins are clear, transparent and elegant. If you swim with your head down, floating and struggling, you can't buy sick fish with trauma, white hair and white spots, thick tail fins, cloudy eyes, dim body color and loneliness.
Just learning to raise fish has a process of skill accumulation. You don't have to choose perfect fish, buy cheap fish. Of course, you can't ignore buying healthy fish.
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. Pay attention to the density of fish. Novices often buy the fish they like when they see it, and seldom care about how many fish can be raised in the tank. Even if they ask the fishmonger for advice for profit, can they ask you to buy less? 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 fish with 10 cm and 8 fish with 5 ~ 6 cm (relatively narrow). In winter, the temperature is low, feeding is less, and it can be properly dense. Goldfish are more active in a larger space, and their body color is more vivid. Too high density can easily lead to lack of oxygen in water, deterioration of water quality, and illness and death of goldfish.
Third, the fresh water for keeping goldfish should be stored for a day or two, which is called sun-drying. On the one hand, the purpose is to remove some chlorine from water, and on the other hand, to make the temperature of new water close to that of old water.
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 with fish in the fish tank 10 to 20 minutes before opening it, so that the water in the tank can flow back into the bag for many times and gradually mix with the original water in the bag, so that the fish can gradually adapt to the water temperature and quality in their 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. Take it once or twice a day within 5 to 10 minutes. Feed less in rainy days and not at night. Fish need to consume more oxygen when digesting food. On rainy days and nights, the air pressure is low, so the dissolved oxygen in the water is low. In this case, feeding the fish may lead to serious hypoxia in the water and kill the fish. This is 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.
Eight ingredients must be clean. Feeding unclean fish food can easily lead to fish diseases. Although goldfish like live food best, goldfish who eat live food grow faster. However, live food grows in polluted water environment and is easy to be contaminated with germs, so be careful when releasing 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.
Goldfish have white spots because they have skin mold.
When fishing and transporting ornamental fish, the skin of the fish was accidentally injured, or the skin was damaged by parasites. The spores of mold invade the wound, absorb nutrients and germinate quickly. One end of the mycelium goes deep into the muscle, and the other end grows outward, forming a cotton-wool mycelium. Dermatomycosis can occur all year round, especially in early spring and late winter. In order to prevent the occurrence of water mold, attention should be paid to prevent fish from being injured and bitten by parasites, and a small amount of salt can be put in the water to inhibit the occurrence of dermatophytes.