Xiaobian found a secret, never seen the fish's eyes are closed, are in open eyes sleep ~ why Xiaoyu is open eyes sleep? Follow Xiaobian to see the answer~
The reason why little goldfish sleep with their eyes open
Fish are vertebrates and also need to sleep to eliminate nervous system and limb fatigue. However, the fish has no eyelids, so when it sleeps, it can't close its eyes. We often see the fish in the water still, gills flash to move, this is the fish in sleep. If you wake it up, it will swim in the water again.
How to raise goldfish is not easy to die
Preparation before buying fish. Get the fish containers ready. For the sake of beauty, aquarium is usually used with filtering equipment. However, glass aquarium is more difficult to take care of, if conditions permit, it is recommended to use fired clay tile tank. Inject four fifths of tap water and let it stand for more than three days. At least 1 day. In this process, the chlorine in the tap water will overflow, and the water temperature will gradually rise to a temperature equivalent to the ambient temperature. This is the most crucial step, which should not be ignored.
Choose healthy goldfish. Although the appearance of goldfish is very important, health is more important. To see goldfish no damage, no white spots, tail fins no black spots (poor water quality will lead to goldfish fins black, not natural changes in body color), scales are relatively complete. When picking up, struggle vigorously (if you are weak, it is difficult to support after buying back). Don't buy too many. Just raise three to five for the first time. It's better to buy smaller ones. Relatively speaking, they are less ill. They can also enjoy the pleasure of growing their own goldfish.
Disinfect before entering the tank. Generally, use a small container, take part of the dry water, add 3% - 5% salt, and then put the plastic bag containing the fish together with the raw water into it. The plastic bag should be opened to prevent the goldfish from dying of hypoxia. After half an hour, use your hand to test the water temperature inside the plastic bag is consistent with that outside the plastic bag, and then fish out the goldfish and put it into the salt water. If there is still a temperature difference in the water temperature, you can continue to wait until the temperature difference can not be felt by hand before fishing. This step is very important.
Put the sterilized goldfish into the tank. After soaking in salt water for half an hour, the goldfish can be picked up and put into the prepared jar. If it's an aquarium, please turn on the filter.
Two days later, they were fed. The best way to feed is to choose live fish and insects. If there is no live fish, frozen fish or finished fish feed is OK. The amount of feeding should be controlled well, and it is appropriate to eat up in half an hour to an hour. At the beginning, the dosage should be reduced as much as possible, and gradually increased. Through three to four days, the relatively fixed daily dosage can be basically determined.
Feeding time and ration. Goldfish are small animals that don't know how to feed. If there is enough food, it will keep eating. Some may die of fullness; if they can't finish eating for a long time, the residual food will damage the water quality and cause the goldfish to get sick. In a word, we should feed less and frequently, but we have to feed more. Feed at least once a day and no more than three times a day. Occasionally something is not at home, a week or so do not feed will not be a problem. But little goldfish don't grow up without enough food.
Change the water properly. For aquarium tanks with filtration equipment, more than one fifth of the water is pumped out every week, and the fresh water that has been dried for more than three days and has the same water temperature is added; for clay tile tanks without filtration equipment, the bottom dirt is extracted with a straw after a period of time, and then the same amount of fresh water that has been dried is added.
When sick fish are found, they are immediately fished out and raised separately. Goldfish are sick, most of them will be infected, usually observe goldfish, find outliers, white spots and other symptoms, separate out treatment, so as not to infect other healthy goldfish.
How to identify the hunger and satiety of fish
If the fish has been looking for food in the water, it means that it may be hungry and want to find something to fill its stomach. When you throw feed to it, it will immediately grab food. If it just pecks feed once or twice and starts playing, it means that it has eaten enough. It is very simple to judge in this way.
In addition to the above simple observation method to judge whether the fish is full, we can also use the control of time and feed quantity to judge whether the fish is full. Generally speaking, if the recommended amount on the package is thrown to the fish, the fish will have a good appetite reaction. The amount of feed fed in 5-10 minutes should be eaten by the fish, and the fish should have eaten enough; if there is still residual feed in the water 5-10 minutes after feeding, it means that the amount of feed may be too much, and it should be reduced in the next meal.
Nevertheless, some species of fish eat more unrestrained, such as map fish, blood parrot, eight character doll, goldfish, etc. these kinds of fish will eat desperately, so the reason why we need to observe more fish is to pay attention to its normal posture. If it keeps eating after feeding and makes its stomach bulge, it means that it eats too much, so it can't use such a share Usually, we hope that the fish can have a little bulge after feeding. We would rather eat a small amount of food and divide the appropriate amount of feed it can eat into two or three times a day. Then, the fish will not eat too much, and there will be no feed left. And as long as you have more contact with the fish, you will be happy You will find that when the fish see you, they will warmly welcome you. This is the so-called "master recognition" situation, which makes the fish farmers feel a great sense of achievement.