How long does the koi live?

Koi has a strong physique, bright colors, changeable patterns and male swimming posture, and has high ornamental and feeding value. at the same time, because of its mild nature, like group swimming, easy to raise, long life, strong adaptability to water temperature and other breeding characteristics, it has become a popular high-end ornamental fish in today's world. Let's take a look at how long the lifespan of koi is.

How long is the lifespan of koi?

The lifespan of koi is very long, generally up to 70 years. According to records, there is a Japanese red carp named Hanako, which was born in 1751 and died in 1977 for 226 years. The fish is 77 centimeters long and weighs 9 kilograms. It can be called the "old birthday boy" of the koi group.

Brocade carp body length of more than 90 centimeters, it can be said to be quite large. In fact, koi is relatively large, with a body length of up to 1 meter and a weight of more than 10 kilograms. The red pine leaf koi with a body length of 125 centimeters appeared at an oral evaluation meeting in Japan, and even a record of 150 centimeters long and 45 kilograms of super giant carp.

Age determination of brocade carp

1. If you want to get the right age, you can see from the rings on the fish scales that the rings are similar to trees in shape, but you have to look at them with a magnifying glass or microscope, and the new scales are not accurate. All fish in this part are the same.

2. if you only roughly estimate whether the fish is old or young, you should look at its eyes. Generally speaking, the fish of the same size have larger eyes, lighter and older eyes, and the black part of the fish eyes is older.

3. Koi has more body color performance, generally mature fish, the stability of body color texture is higher and more solid.

Culture methods of brocade carp

1, water temperature: koi and goldfish are not strict about water temperature and water quality, the suitable temperature range is 2: 30 ℃, but can not resist the sudden change of water temperature, the temperature difference exceeds 2: 3 ℃, the koi will be uncomfortable, and the optimum water temperature is 20: 25 ℃. It is suitable to live in a slightly alkaline and low hardness water environment.

2, feed feeding: koi is omnivorous fish, animal or plant-based bait can be fed, such as water fleas, water earthworms, shrimp, cornmeal, crackers, instant noodles, vegetables, and even rice balls. It is best to feed synthetic pellet bait (the crude protein content of the feed is more than 35%) with a certain amount of natural bait.

3. Feeding density: the general stocking density of fish pond can refer to the density table of brocade carp in fish pond. The density of water cluster box is generally 60 cm × 30 cm × 15 cm, 6 koi with a length of 15 cm × 20 cm, 8 carps with a body length of 90 cm × 30 cm × 50 cm, and 10 carps with a body length of 110 cm × 30 cm × 50 cm.

The most common carp in the world

1. The most expensive koi: in 2009, a koi ornamental fish center in Guangzhou held a small koi auction in Beijing, with a total auction volume of 5 million yuan. Among them, one of the best items in this auction, "Red and White Danding", was bought by a mysterious buyer at a sky-high price of 990000. However, it is reported that the most expensive ornamental fish is the Japanese koi. A Japanese koi was once sold to the Germans for 20 million yuan.

2. The largest koi: in 2010, a French fisherman named Rafael Biagini captured a huge koi weighing 13.6 kilograms on a lake in southern France. The orange koi is about the size of a three-year-old girl and is considered to be the largest caught so far in the wild.