In fact, koi fish is not difficult to raise, or an old saying goes; People who don't know how to raise fish can feed koi fish for a year or two. However, it does not mean that it can be raised on a large scale. It should be emphasized that koi fish consumes a lot of oxygen. If kept in aquariums or other small containers with high feeding density, a pump is necessary equipment. Koi fish has a lot of excreta, so it needs to be kept in a bare tank, and water filtering devices are also indispensable. Koi fish swims fast and likes to jump. Don't put ornaments in the fish tank that may harm koi fish and the fish tank. Cover the container. The minimum size of the fish tank should be 80 cm long (this tank can only support 2-4 koi fish with the size of 20-25 cm). Of course, it is best to use a larger container, because we have to consider whether koi fish will stay or not after being raised. But if you don't even have an 80cm tank now, it doesn't matter. Feed the fish successfully first, then make plans.

Choosing fish is the key to raising koi fish. Buying small fish with the size of 10-20 cm has the highest success rate. When choosing fish, you should see whether the water is too muddy and whether there are a few rotten fish in school. If that's the case, you don't have to look at the fish in this pool. If this passes, you can watch the fish you want quietly. Never buy short-headed, blunt, thin or bloated fish. Choose fish with symmetrical body shape, active swimming posture and bright eyes. Cheap fish, the color is generally not too good, as the saying goes; You get what you pay for, but you are still in good health. After choosing the fish, remember to ask the store to oxygenate your fish. After taking the fish home, don't open the bag in a hurry. Put the whole bag with fish on the surface of the feeding water for 45 minutes-1 hour, so that the fish can gradually adapt to the temperature of the feeding water. Then open the bag, let the fed water gradually mix with the water in the bag, and then put the fish.

In the next few days, water is the most easily turbid. It is best to change the water supply of 1/2-2/3 every day. If your fish container is too big to change such a large amount of water, you can put it in a suitable small container for two weeks. When you see the fish start to improve, you should catch it in a fixed container, and remember to balance the water temperature of the two containers before fishing. Whether it is temporary or fixed, it is best to put enough activated carbon in the water filter to minimize the amount of harmful substances. After keeping the fish stable, if koi fish is kept in a small container such as a fish tank, it is best to change the feeding water of 1/8- 1/3 every four or five days according to the different water quality, which is very beneficial to the healthy growth of koi fish and keeping the water quality clean.

In the whole process of raising koi fish, there is generally no need to put preventive drugs, and blindly using drugs will only kill fish. Individual sick fish should be isolated in time, observed for a few days, and then treated separately. Activated carbon should be taken out when taking medicine, and the medicine should be light but not strong. Pay attention to observation. Once the fish is found to have an uncomfortable reaction, change the water in time. Commonly used drugs are; Huangpai Yubao panacea (mainly composed of methyl blue) yellow powder and potassium permanganate (just adjust the bath water to pink).

Koi fish should feed it two or three times a day, and the feeding amount shall be subject to eating the feed within ten minutes each time. I suggest you buy bulk spices (a mixed pellet feed with a brown smell).