CATDOLL : CATDOLL: Marine fish farming cycle? What is the concept of fish breeding cycle?

1. Marine fish farming cycle?

The breeding cycle of different species is different. The breeding cycle of blue grouper and oily grouper is about 1 year, while the breeding cycle of eastern grouper and humphead grouper is as long as 2-3 years. Cost analysis: The cost of breeding grouper includes seedlings, feed labor costs, water and electricity costs, management fees, epidemic prevention costs, etc. The breeding cost of one acre of grouper is about 400,000 yuan, and the profit is more than one million yuan, which is very considerable.

2. What is the concept of fish breeding cycle?

Ordinary fish can ovulate in spring when the water temperature reaches above 20 degrees. However, different fish have different breeding times. For example, carp spawns from March to August, with the peak period from April to June. Grass carp spawns from early May to early June, with the peak period in mid-to-late May.

3. Fish farming technology?

1.

Stocking time selection: Fish should be released on sunny days when the temperature is not too low. Generally, the temperature should be between 2℃ and 5℃. At this stage, the fish scales are tight and the activity is small. It is not easy to injure the fish during fishing, transportation and stocking operations, which can reduce the morbidity and mortality of fish. It is easy to frostbite the fish on rainy days with low temperature or snowy, frozen and windy weather; when the temperature is too high, the fish scales are loose and the activity is large, which is easy to injure the fish during operation.

2.

Stocking of fish: Before stocking the fish, check whether the drugs have lost their effectiveness after pond cleaning. In early spring, the water temperature is low and the toxicity disappears slowly. Water should be taken in advance and test fish should be released. According to the stocking plan, individual size, density, and matching species and specifications, the fish that can be released at one time should not be released in batches, so that the fish can adapt to the environment, start eating early, and promote growth. At the same time, [Gold Iodine] should be used for drug disinfection when stocking fish.

3.

Feeding at the right time When the water temperature rises to 810℃, fish begin to eat, and the amount of food intake gradually increases with the increase of water temperature, so they should be fed in time. Feed once a day or every other day, and choose to feed at noon on a sunny day; as the water temperature continues to rise, the number of feedings can be increased to twice, that is, feeding once in the morning and once in the afternoon. Feeding should adhere to the principle of four determinations (timing, quality, positioning, and quantity), and the specific daily feeding amount should be flexibly controlled according to the weather, water temperature, and the feeding situation of fish. For grass carp weighing more than 1 jin, it is recommended to feed Da Beinong high-grade expanded feed 8103 in the early stage of feeding; for small grass carp mode, it is recommended to feed Da Beinong microecological juvenile fish special feed [Intestinal Liver Health], and the feeding rate is controlled at about 0.5%1%. This product is rich in nutrients and probiotics, which can quickly repair the fish intestines, restore the physique, and improve immunity.

4. How many types of fish are farmed?

Grass carp, black carp, silver carp, bighead carp, carp, crucian carp, bream, and bighead carp are farmed fish. These eight fish are all carp fish, warm-water fish, with large spawning capacity and strong reproductive capacity. They can spawn naturally, have sufficient seedling sources, strong disease resistance, a long history of artificial breeding, and mature artificial breeding technology. The breeding method is flexible, and can be intensive or extensive, and can be fed with artificial bait or commercial fish feed.

5. What is the definition of artificial fish farming?

Fishery farming is also known as aquaculture, which is the artificial breeding of various fish species and seafood to meet market demand. It can be roughly divided into three categories: freshwater farming, saltwater farming and marine farming. Freshwater farming is carried out in inland ponds, lakes and other waters.

Freshwater aquaculture includes fish farming in rice fields, reservoirs, ponds, etc., mainly breeding fish and shrimps, with a high production level, large output and high returns.

Saltwater aquaculture is suitable for breeding some seafood that have special requirements for water quality, such as tilapia, pike, white shrimp, American red fish, carp, etc.

Marine aquaculture utilizes coastal beaches and bays to cultivate fish, shrimp, shellfish, algae, sea cucumbers, etc. It has high yields, short growth cycles, and high economic benefits.

6. Fish breeding techniques?

1.

Stocking time selection: Fish should be released on sunny days when the temperature is not too low. Generally, the temperature should be between 2℃ and 5℃. At this stage, the fish scales are tight and the activity is small. It is not easy to injure the fish during fishing, transportation and stocking operations, which can reduce the morbidity and mortality of fish. It is easy to frostbite the fish on rainy days with low temperature or snowy, frozen and windy weather; when the temperature is too high, the fish scales are loose and the activity is large, which is easy to injure the fish during operation.

2.

Stocking of fish: Before stocking the fish, check whether the drugs have lost their effectiveness after pond cleaning. In early spring, the water temperature is low and the toxicity disappears slowly. Water should be taken in advance and test fish should be released. According to the stocking plan, individual size, density, and matching species and specifications, the fish that can be released at one time should not be released in batches, so that the fish can adapt to the environment, start eating early, and promote growth. At the same time, [Gold Iodine] should be used for drug disinfection when stocking fish.

3.

Feeding at the right time When the water temperature rises to 810℃, fish begin to eat, and the amount of food intake gradually increases with the increase of water temperature, so they should be fed in time. Feed once a day or every other day, and choose to feed at noon on a sunny day; as the water temperature continues to rise, the number of feedings can be increased to twice, that is, feeding once in the morning and once in the afternoon. Feeding should adhere to the principle of four determinations (timing, quality, positioning, and quantity), and the specific daily feeding amount should be flexibly controlled according to the weather, water temperature, and the feeding situation of fish. For grass carp weighing more than 1 jin, it is recommended to feed Da Beinong high-grade expanded feed 8103 in the early stage of feeding; for small grass carp mode, it is recommended to feed Da Beinong microecological juvenile fish special feed [Intestinal Liver Health], and the feeding rate is controlled at about 0.5%1%. This product is rich in nutrients and probiotics, which can quickly repair the fish intestines, restore the physique, and improve immunity.

Four,

Add organic fertilizer to improve the fertility of the water body. Sanyingshuiwang organic biological fertilizer has a long-lasting fertilizer effect. Yizaoyuan promotes algae growth and quickly fertilizes the water. After the fish pond is cleaned, frozen, and disinfected in winter, the fertility of the water body is low. As the saying goes, raising fish starts with raising water, so fertilizing the pond water is particularly important. In spring, it is best to apply organic fertilizer. It is recommended to use biological fertilizers rich in various trace elements [Sanyingshuiwang] or Yizaoyuan, which are rich in trace elements. The specific amount of fertilizer and frequency should be determined according to the quality of pond water and fertilizer.

The general principle is: early spring, large amount and few times, late spring, small amount and many times. Make the pool water green (including blue-green, yellow-green and bean green) or brown (including yellow-brown, reddish brown and tea-brown), the water transparency is moderate, maintained at about 30 cm, the water temperature is low in early spring, it should be controlled at 20-30 cm, the temperature is high in late spring, it should be controlled at 25-35 cm, the water quality should be kept rich, active, tender and refreshing.

7. The longer the photoperiod, the faster the fish grow?

All things cannot grow without light, and fish are no exception. The color change of fish is the result of light; the healthy growth of fish also depends on the help of light. Therefore, if you want to keep fish healthy and beautiful, you must let them receive light. The light here includes both sunlight and artificial light in the home.

Tropical fish are very sensitive to sunlight.

The same tropical fish will show different colors when living in a strong light environment and a weak light environment. The color depth of many tropical fish is closely related to the light intensity.

8. Goldfish breeding cycle?

That is to say, from the time the goldfish hatches to the time the yolk sac completely disappears, the body length of the fry can grow from 0.2 cm to about 0.9 cm. The newly hatched goldfish fry will not be able to swim in the water within two or three days, and can only hang upside down on the water plants or the wall of the tank. They will not eat from the outside, and survive by absorbing nutrients from the yolk sac. After about three days, the nutrients in the yolk sac are absorbed, and the fins of the small fish are fully developed, and they can swim horizontally to obtain food from the outside.

Many ornamental fish have similar properties to goldfish. They can only take in food after swimming out of water normally. Some ornamental fish even swim around with a large yolk sac on their bodies after swimming out of water.

2. Juvenile stage

The period from the time a goldfish starts eating until its gonads mature can be called the juvenile stage. This period is about one year. The body length of a goldfish can grow to 7 or 8 centimeters, and if it is well fed, it can reach more than ten centimeters.

When entering the juvenile stage, the first thing we have to face is the problem of the little goldfish's initial food, such as backwater water, brine shrimp, small fish worms, egg yolk water, etc. In short, all living things in the water that they can swallow are their source of nutrition.

9. What is the cicada breeding cycle?

It takes about 3-4 years for cicadas to crawl out of the ground. 1. Egg stage: After overwintering, cicadas hatch around June. When they find a suitable place, they will dig a hole, drill into the ground, and suck juice for a living.

2. Nymphs: They generally live in the soil for about 3-5 years and molt once every June to September.

3. Adult: After the nymphs mature, they drill out of the ground and begin to eclode. After 20 days of eclosion, they begin to mate and lay eggs.

10. What is the dandelion cultivation cycle?

It only takes about 60 days for dandelions to go from sowing to flowering!