Can wild osmanthus fish caught from the river be used for artificial breeding?

It is necessary to carefully raise these osmanthus fish in a special tank.

With a weight of 1 2 kg, you can choose females and males who do not have any diseases for your health, feed some commercial feed, and artificially induce labor. Ovulation is very natural, the fertilized eggs float in the water to complete the hatching, the water temperature is between 21 and 24 degrees, and the baby fish can be born after 72 hours. A large number of saplings can be obtained in this way, and when food is insufficient, they used to kill each other, which has a great impact on the survival rate.

In the case of broken breeding, the pond area should be kept at about 1 acre, the water depth should be kept between meters and 2 meters, the water quality is very strict, the pond water is required to flow slightly, put about 3 cm of osmanthus fish, 1000 can be put per mu, according to the number of feeding, put in the wheat ear fish.

The minced meat, let these osmanthus fish prey. Polyculture can also be used. Osmanthus fish, crucian carp and tilapia are stocked in May every year.

Mackerel cannot be cultured in ponds.

They need a lot of oxygen to live, so don't add a lot of fertilizer to the pond and fill it with fresh water regularly.

Mackerel is also known as cinnamon.

Osmanthus fish, fat mackerel, soft meat, firm, less thorny, fresh taste, rich in nutrition, per 100 grams of fish meat contains protein grams, fat grams, is a precious freshwater fish welcomed by consumers. Mackerel is widely distributed in our country, and there are many species, the common species are wings, mouths, big eyes, there are two kinds, wings and mouths in rivers, rivers and lakes, which is the most but mackerel is a carnivorous and ferocious fish, which is very harmful to other freshwater fish, and is generally rarely cultivated in ponds in production, mainly fished from natural waters, so the output is very unstable. At the same time, mackerel is insufficient, and natural mackerel resources are decreasing.

Mackerel is best inhabited in clean water or slow-flowing waters, especially in areas with abundant aquatic weeds. Mackerel are not very active in winter, prefer to spend the winter in deep water, spring water temperature**, and prefer to feed in shallow coastal water. Mackerel is a typical carnivorous ferocious fish, eating small fish, shrimp, mackerel with a body length of 31 cm can swallow fish with a body length of 15 cm, and the female fish is in the yolk sac.

After disappearing, it can actively ingest other small fry (such as mackerel, rays).

etc.). June to July is the peak season for mackerel. Mackerel grows faster in Pleasant Goat.

Under the premise of sufficient bait, the fish body can reach 300 800 grams in winter.

OK. But the period before he breeds should be taken care of, and it is best to breed carefully for a period of time. If you don't live well, you won't be able to reproduce

I don't think it's possible, it's very troublesome to breed osmanthus fish, and wild osmanthus fish have strict requirements for the environment and water quality. The general water quality is not sustainable. We now collect fry in the Yangtze River and the Pearl River.

Basically, no, now you want to breed mandarin fish is particularly troublesome, wild mandarin fish it has particularly strict environmental requirements, water quality must be, otherwise it will not survive. Generally, we now catch fish fry are collected in the Yangtze River, Pearl River and other two major water systems, and in June every year, because this period is the fry flood season, we also generally call it the Fa River, in this stage of the mandarin fish will also breed, but the number of breeding fry is particularly small.

Osmanthus fish farming.

Broodstock selection and breeding: mandarin fish spawning like flowing water, artificial breeding first choose 1 2 kg of healthy and disease-free broodstock pond feeding, when fed wild trash fish or commercial feed, can be artificially induced, injection of carp pituitary gland or HCG, LRH-A and other hormones, let it ovulate naturally. Mandarin fish eggs are slightly viscous, with a larger specific gravity than water, and are easy to sink to the bottom.

Incubation in the ring should be carried out at a higher flow rate of no less than meters per second. After 3 to 4 days, the fertilized eggs can hatch into fry. A large number of fry can be obtained by artificial insemination.

Natural fry can also be fished for culture. Cement ponds should be used for seedling cultivation, with an area of dozens of square meters. The water quality is required to be fresh and have a slight flow.

In addition, it is necessary to attach a small feed fry breeding pond (other fish that are basically synchronized with mandarin fish during the breeding period) to ensure the ** of live feed. Mandarin fish have the habit of eating the weak, and when there is a lack of feed, they will eat each other, which affects the survival rate. In the case of sufficient feed, the fry can be bred into about 3 cm summer flower fingerlings after 10 to 15 days of rearing.

At this point, it can be transferred to grow-out farming.

Breeding method polyculture: one is polyculture in adult fish ponds, and the other is interculture in broodstock ponds. Generally, around May, about 3 cm of mandarin fish fingerlings, wild trash fish more adult fish pond put 20 40 (the minimum size of the fish should be 1 times larger than mandarin fish), fish pond mu put 30 50; Stocking tilapia and crucian carp can be more adult fish ponds, 50 70 per mu; Ponds where tilapia breed too much should be stocked with about 100 per mu. The ponds of polyculture mandarin fish should not be stocked with silver carp, bighead carp and other summer flowers, because the mandarin fish grow fast and will devour small-sized domestic fish fingerlings.

Since mandarin fish consumes more oxygen than domestic fish, the water quality of the pond for polyculture of mandarin fish should not be over-fertilized, and new water should be injected regularly. Mandarin fish are sensitive to drugs, and the concentration should be calculated when applying the drug, and the low dose or stop the drug in the season when the water temperature is high. Mandarin fish is mainly used as feed for natural wild miscellaneous fish in the pond, and some tilapia broodstock can also be raised to breed fry for feeding.

Ponds close to rivers and lakes can be irrigated to raise seedlings and wild trash fish can be introduced as food. Mandarin fish are reared for 4 to 5 months, can grow to about 300 grams of commercial specifications, and can produce 5 8 kg of mandarin fish per mu.

Monoculture is special pond breeding. The area of the pond is about 1 acre, the water depth is meters, the water quality is required to be fresh, and the water should be kept in a slight flow. About 1,000 mandarin fish of about 3 cm are placed per mu, and tilapia, wheat ear fish, shrimp and other wild miscellaneous fish are reasonably put according to the fish stock, or the minced meat of snails and mussels for mandarin fish to eat.

The feeding rate is 3% to 5% of the total weight of the pond mandarin fish.

It's best to read books. Just be specific, just put your mind to it!

The cultivation of osmanthus includes pond conditions, stocking of fry, and feeding management.

1. Pond conditions

Cultivating osmanthus fish should choose a pond with leeward spring and sunny spring, sandy loam soil bottom and flat pond bottom.

2. Stocking fish fry

When stocking osmanthus fish, put it in the water with a plastic bag for 20 minutes to slow down the seedlings.

3. Feeding management

Feed the osmanthus fish with bait once every 7-10 days.

The life habits of osmanthus fish are clear

Osmanthus fish is a completely freshwater living fish, like to inhabit rivers, lakes, reservoirs and other aquatic plants lush and clean water bodies, during the day generally lurking at the bottom of the water, at night out of the activity foraging. I don't like to do long-distance wandering and migration, and I don't like to live in groups.

The suitable water temperature for life is 15 32. However, some scholars have shown that in the range of 10 25, with the increase of temperature, the specific growth rate of osmanthus increases with the increase of temperature, while there is no significant change between 25 and 35, and when the water temperature reaches 35, the growth of osmanthus fish does not slow down significantly, which is related to the general fish and water temperature research results.

That is, in a certain temperature range, the feeding rate and growth rate of fish increase with the increase of water temperature, when the water temperature exceeds the optimal water temperature, the feeding rate and growth rate of fish will decrease inconsistently, which indicates that the optimal growth temperature of osmanthus may be wider.

Osmanthus fish is a carnivorous fish, ferocious and feeds on fish and other aquatic animals throughout its life, eats other fry in the larval stage, and mainly preys on small fish and shrimp such as bream and shark and seems to be at 200 mm, and also eats tadpoles and small frogs; When it is above 250 mm, it mainly feeds on carp, crucian carp and other fish. Feeding stops in winter, and hunts at night in spring, summer and autumn.

Breeding pond: the area can be between 3-8 acres, and it needs to be built in a place with good water quality. Water depth:

At least meters, the water depth can be increased appropriately in winter. Food: Guiyu is a typical carnivorous fish, and it is often used as their food for small fish, such as white carp, which can be cultivated at the same time as the cultivation of Guiyu.

Water quality: The water needs to be changed regularly to keep the water quality clean. Generally, it is replaced once a week to ensure that the transparency of the water is more than 40 cm.

Guiyu is one of the common fish living in our country, and it belongs to the order Perciformes from the perspective of category. Wild osmanthus fish are widely distributed in the waters of various regions of China. In addition, Guiyu is also a fish that can be raised in captivity.

The economic value of Guiyu is high, because they have a good taste, rich nutrition, and the number of fish bones is not particularly large, so it is widely popular. Therefore, on the whole, the breeding area of osmanthus fish is still relatively large, and many farmers choose to breed osmanthus fish. Farmed cinnamon can be used in both the south and the north, because the fish adapt well to water temperatures, even at relatively low water temperatures.

1. Breeding pond: Breeding osmanthus fish is generally used in breeding ponds. The breeding pond needs to be large enough, and it is generally appropriate to control it between 3-8 acres. The breeding pond also needs to be built in a suitable place, preferably close to the water source, the drainage and irrigation are more convenient, and the water quality is better.

2. Water depth: Breeding osmanthus also needs to pay special attention to the water depth, because the osmanthus likes to inhabit the waters. Therefore, the water in the breeding pond should not be particularly shallow, generally speaking, it must be at least a meter deep.

In winter, the depth of the water can also be appropriately increased, which is more conducive to the winter.

3. Food: Breeding osmanthus fish needs to prepare enough food for them, so that their development status will be good. Guiyu is a carnivorous fish, and some small fish are their favorite food.

Fish such as crucian carp are often used as feed for osmanthus fish, and this kind of feed fish can be cultivated at the same time as the osmanthus fish is raised, and sufficient feed can be provided for the osmanthus fish.

4. Water quality: The water quality of the fish is also very important, the water quality is too dirty, which will seriously affect the growth of the fish, and may cause them to get sick. In order to ensure the quality of the water, the water needs to be changed regularly.

In general, it should be changed once a week to keep the water transparent at more than 40 cm.