What is the growth cycle of a yellow eel? How many years does a yellow eel live? How big can you usu

The growth cycle of yellow eel is 6 months.

Eel stocking should be in April, May, or August to September to avoid sexual maturity between mid-May and July.

Breeding period. The most suitable temperature for the growth of yellow eels is Celsius.

24 to 28 degrees.

Feeding should be timed, eels are out at night and night, and it is advisable to feed at 6 or 8 o'clock in the afternoon. The feed should be fresh, and the feed with freighty mold should not be put in. The feed should be washed before it is put in, and each cubic water body should be soaked with 3 to 5 grams of salt for 10 to 20 minutes, and then rinsed with water before feeding.

When feeding in captivity, due to the feeding of a large amount of feed, the feces excreted by the yellow eel are easy to pollute the water quality, so it is necessary to add new water frequently to keep the water fresh. Change the water every 7 to 10 days in the spring and 3 to 5 days in the summer.

From about 12 days after hatching, it can grow to about 12 to 15 centimeters to make eel seeds, and eel seeds can be made into commercial eels after about 180 days of raising to more than 22 centimeters.

1. Artificial breeding: five to six years.

2. Wild: more than 12 years.

The lifespan of wild yellow eels is generally about 6 years, and a very small number of yellow eels can survive for as long as 10 years in the natural environment.

Basically, there is no yellow eel that can live for more than 10 years. The lifespan of artificially farmed yellow eels is longer than that of wild yellow eels, with a certain probability of more than 10 years. Yellow eel is a tropical and warm temperate fish, benthic fish, highly adaptable, living at the bottom of water bodies, mainly inhabiting paddy fields, lakes, ponds, rivers and ditches and other muddy waters.

According to this friend who breeds yellow eels, the spawning period of yellow eels is in May and June every year.

When it grows into the mud around November, it spends the winter, and no longer eats, and the individual weight of the eels this year is only 3-5 grams. The weight gain in the second and third years is not much, and the weight of the three-year yellow eel is generally less than 60 grams. But by the fourth year, it starts to grow rapidly, and its weight can reach 100-200 grams that year, and by the sixth year, if it grows quickly, it can reach about 350 grams.

However, after several years of rapid growth, the growth of the eel has become quite slow from the sixth year onwards. Wild eels weighing more than 500 grams are usually grown for at least 12 years, and this is still very rare. There are news reports.

The largest yellow eel is actually more than 30 catties, which is really scary.

In its natural state, the lifespan of yellow eels is generally about 15 years, and a few can live up to 20 years;

Under artificial conditions, there are indeed records of more than 20 years, and the age of three to four people who survive in the wild is about three years, the age of five to seven is about 5 years, and the age of more than 8 is more than 6 years.

The body length of the eels is generally between 20-70 cm in adulthood. There are also larger eels that can reach more than 1 meter in length, but such large eels are not particularly common. Specifically, many factors can affect the size of the eel.

For example, the temperature of the water affects the appetite of the eel, which affects their development, and its body size is affected by this. Therefore, if yellow eels are bred in captivity, it is necessary to provide them with a suitable environment to allow them to grow larger.

Yellow eel is one of the common fish in China, living in freshwater, and has a very wide distribution in all kinds of freshwater. When the eels reach adulthood, their body length is generally between 20 and 70 centimeters. It can be seen that the individual body length difference of different eels is relatively large.

There are also larger eels that can reach more than 1 meter in length, but such large eels are not particularly common.

Specifically, there are many different factors that affect the specific body size of the eel, resulting in differences in the body size of different individual eels. For example, various factors in the environment have a greater impact on yellow eels. For example, water temperature is one of the more important factors, and the water temperature mainly affects the appetite of the eel, and the level of appetite will affect the development of the eel, and ultimately affect their growth rate.

If you want to artificially breed yellow eels and make them grow better, then you need to pay attention to regulating the surrounding environment to keep the surrounding environment in a suitable state.

From the point of view of reproductive characteristics, yellow eels are a relatively special fish, because they may have sexual reversal. Specifically, when eels are one year old, they develop into females, at which point they can reproduce. Generally speaking, their breeding season is concentrated between June and August, because the environmental factors are more suitable at this time, and the success rate of breeding is relatively high.

After they reproduce once, they will continue to develop into male eels at about two years of age. It can be seen that although yellow eels are also fish, their reproductive characteristics are very different from ordinary fish.

<> the growth cycle of yellow eel is generally about 6 months, during its growth period needs to provide it with sufficient animal bait and the appropriate amount of plant bait, generally can be fed earthworms, silkworm pupa, fly maggots, wheat flour, corn flour and other food and clean up the bait in time, require the appropriate amount of aquatic plants in the breeding pond, the water quality is alkaline, the water depth is more than 1m, the bottom should have an appropriate amount of silt, and at the same time regularly inspect the pond to observe the activities of the yellow eel, if there is an abnormality, it needs to be dealt with immediately.

1. How long is the growth cycle of yellow eel?

1. Growth cycle.

The growth cycle of yellow eel is generally about 6 months, but because of the different breeding techniques, the speed of yellow eel growth is also different, so the specific growth cycle needs to be determined according to the actual situation.

2. How to raise during the growth period.

1) Choose a venue.

Yellow eels can be cultivated with the water body of fish and shrimp, and the water quality is required to be alkaline, the water depth is generally more than 1m, and there is a moderate thickness of silt at the bottom of the pond.

2) Stocking of fry.

The ponds are disinfected and the appropriate amount of aquatic plants is planted in the ponds before the eels are placed in cages.

It should be noted that yellow eels with similar body shape, age and other conditions should be placed together.

3) Bait. The bait is generally based on animal feeds such as earthworms, silkworm pupa, fly maggots, and snails, supplemented by plant feeds such as wheat flour, corn flour, and bran.

Feed fresh bait, not spoiled bait, and clean up the residual bait in time after feeding.

4) Daily management.

Keep the water flow of the entire pond in a slightly flowing state to ensure the activity of the water body in the cage.

Regularly inspect the pond to check the activity of the eel, and deal with any abnormalities in a timely manner.

Clean up the debris in the cage, and if you find that the cage is damaged, you need to repair it immediately.

Second, there are no requirements for water quality for yellow eels?

1. Yellow eel has requirements for water quality, it likes to live in a water body with relatively clean water quality, pH value of about 7, and a silt layer at the bottom of the pond. The bottom material of the breeding pond can not have impurities such as industrial waste, domestic garbage, large plant debris and animal carcasses, and no discoloration and odor are required.

2. There should be sufficient dissolved oxygen in the water body, in a day and night (24 hours), there should be 16 hours of dissolved oxygen greater than 5mg L, and the dissolved oxygen content at other times should not be less than 3mg L.

3, at the same time the water body needs to contain an appropriate amount of plant nutrients and organic matter, can not contain poisons, in order to maintain water quality, so it is necessary to regularly change the water for the breeding pool, generally every 4 days or so to change the water 1 time, in the summer high temperature should be changed every 2 days 1 time, the amount of water exchange needs to be determined according to the water quality conditions, generally each time the replacement of the entire pool water 1 3-1 2, it should be noted that the temperature difference between the inlet water temperature and the pool water temperature should not exceed 3.