Solar term koi fish

As the saying goes, "the first frost kills a hundred herbs", as the last solar term in autumn, from now on, the temperature difference between day and night will increase, the scene of late autumn will become more and more obvious, and cold air will become more and more frequent. If you don't manage koi fish well at this time, you will get sick, and in severe cases, you may die.

The winter period in koi fish is 1 1 until next March. The dissolved oxygen of water will increase with the decrease of temperature, while the oxygen consumption of fish will decrease with the decrease of temperature, so it will not be confined in the tank in cold weather, and generally there is no need to increase oxygen.

Some people say that the amount of feeding should be reduced or not fed in winter, so that koi fish can consume body fat to survive the severe winter. Others say that koi fish itself is a carp, which belongs to cold water fish and is not afraid of cold. And koi fish consumes fat in winter, so it will get smaller. This is the general state of koi fish during the period of low water temperature.

However, some people warm the water in winter to keep the water temperature constant, so that koi fish can continue to grow and not be allowed to spend the winter. So there will be a 2-year-old koi fish, who is over 50 cm long.

Personally, I think this will change the original growth law of koi fish, and with the improvement of feeding environment and feed, koi fish's body shape has been unimaginable before. But it is absolutely unnatural to grow all the year round.

Please pay attention to feeding at low water temperature.

1, digestible fish food, such as germ fish food, should be given when the water temperature is low. You can basically stop breeding (breeding feed is not easy to digest), and breeding, staple food and weight gain can be properly fed.

13- 18℃ can be fed with germ+breeding mixture, so it is suggested to add probiotics to fish food to help regulate the intestines; Usually twice a day, the feeding amount accounts for 30% of the usual. When the water temperature is 13- 18℃, the germ is fed, usually 1-2 times a day, and the feeding amount is controlled each time. When the water temperature is lower than 13℃, you can feed a small amount of germ and gradually stop eating according to the situation. At the water temperature of 10℃, it takes about 19 hours for fish food to be ingested and discharged, and it takes 50 hours for koi fish to completely consume the energy in food, so it is time to stop eating.

2. Fish food contains more protein and fat, and less indigestible carbohydrates.

3. When the water temperature is lower than 13℃, the total feeding amount should not exceed 0.5% of the total weight of fish.

4. The temperature is the lowest in winter, so it is recommended not to eat 1 month, which is conducive to self-cultivation and whitening.

To tell the truth, it is not easy to do the above, especially for indoor fish tank farming, which is very difficult to operate in practice: First, it is difficult to feed fish; Second, if you don't feed for three days, the fish will hibernate and be lazy, making the home lifeless. How can you tolerate it? Unlike outdoor swimming pool farming, invisible places are clean.

How to overwinter koi fish raised in ponds should pay attention to the following points:

1. Make sure that the surface of koi fish fishpond is not completely frozen.

If the surface of the fish pond is completely sealed, make a hole in the ice.

3. The water in koi fish fishpond should be deep enough. If the water depth exceeds 2m, don't worry too much.

Add a greenhouse outside the fish pond, get some straw or something, and cover it with plastic film, at least part of the water surface will not freeze. It's cold in winter, so you need to pay special attention to buying and choosing fish. In winter, many fish bought by fishmongers are sick, and there is the problem of temperature difference. Therefore, you must be careful when choosing fish in winter.

5. When the temperature drops to 0℃, pay attention to transfer koi fish to the indoor fish pond in time, keep the indoor water temperature at 2℃- 10℃, pay attention to heat preservation, and do a good job in disease prevention and treatment.