CATDOLL : CATDOLL: How much does a pound of live freshwater grouper weigh?

1. How much does one pound of live freshwater grouper weigh?

Freshwater grouper is a kind of fish that can be used as an ornamental fish. It is also a very good aquaculture product for economic enrichment. Freshwater grouper grows relatively fast, tolerates low oxygen, has strong disease resistance, and has beautiful appearance, delicious meat, and rich nutrition. Let's learn about the price of freshwater grouper with the editor.



Freshwater grouper price

1. Freshwater grouper has a high yield and is similar to seawater grouper in both shape and color. Some restaurants often use it to impersonate seawater grouper to gain higher profits. Therefore, it is very necessary to understand the price of freshwater grouper.

2. Freshwater grouper has the advantages of fast growth, tolerance to low oxygen, high yield, strong disease resistance and delicious meat. The current market price is 70 yuan per kilogram.

3. However, the price of freshwater grouper varies in different places. In some places, the price of freshwater grouper is between 50-60 yuan. If it is a dead freshwater grouper, the price is mostly between 40-50 yuan, and the price of dried fish is between 76-86 yuan. Here, it is calculated by kilogram!

Freshwater grouper life habits

Freshwater grouper is a tropical fish that grows in fresh water and can also grow in seawater with a salinity of less than 10‰. Its suitable temperature range is between 25-30℃. When the water temperature drops to 20℃, its food intake decreases significantly. When the water temperature drops to 15℃, its body loses balance. Therefore, areas where the water temperature drops below 15℃ during winter are not suitable for the growth of freshwater grouper. During the winter, the water temperature for freshwater grouper to grow is above 19℃. Freshwater grouper is a carnivorous fish. In the fry stage, it has a strong carnivorous characteristic and mainly feeds on zooplankton.



Nutritional value of freshwater grouper

The nutrition of freshwater grouper is actually similar to that of marine grouper. Both are rich in protein and collagen. The difference is that it contains less trace elements than marine grouper, which is the biggest difference between freshwater fish and marine fish. The meat of freshwater grouper is almost entirely composed of protein, and all of it is high-quality protein. It plays a vital role in promoting the development of brain cells and muscle growth. At the same time, it can also replenish our energy and ensure abundant vitality. The skin of freshwater grouper is very thick, so thick that we find it very troublesome to deal with its attack. At this time, don't dislike it, the skin of freshwater grouper is also a treasure! It is rich in colloid and adhesive protein, and its role in nourishing the skin is very considerable. In addition, freshwater grouper also contains a small amount of vitamins and minerals, which have a certain effect on strengthening the body and replenishing qi and blood.

Can freshwater grouper be eaten frequently?

As mentioned in the previous article, freshwater grouper is a high-protein, low-fat food. So can we enjoy this delicacy at will? Regardless of the price, freshwater grouper can be eaten frequently, and it is good for the body to eat frequently, nourishing the brain, strengthening the body, nourishing qi and blood, etc. However, do not eat freshwater grouper at will without considering the consequences.

Generally speaking, it costs 50 to 80 yuan per catty, but it varies from place to place.

Just a few dozen yuan, not more than a hundred yuan

2. Can freshwater grouper adapt to fish tanks?

Temporary breeding can be scattered, for example, if you want to change to a hotel, wholesale and retail market, you can raise fish tanks, which does not require much technical content. If it is breeding, forget it, the fish sold are not enough to pay for the water and electricity bills of Jinzheshi

3. Can freshwater grouper be raised with carp feed?

Freshwater grouper can be raised with carp feed.

Grouper breeding technology

There are two forms of grouper farming: cage farming and pond farming, among which pond farming is the main one.

Pond farming

1. Pond conditions: The pond can be built by digging in the low-tide or mid-tide area of ​​the reclamation area or by using the existing shrimp breeding pond. The requirements are as follows: (1) The bottom should be sandy or semi-sandy, or hard muddy; (2) The water quality of the surrounding sea area should be clean and transparent; (3) The area of ​​the fish pond should be 5 to 10 mu, and the water depth should be more than 1 meter.

2. Clear the pond and put in artificial fish reefs. After the fish pond has been exposed to the sun and silted, lay some rocks on the bottom of the pond or put in some used tires with holes in them, tile water cylinders, etc. to accommodate the habit of grouper to dig holes.

3. Stocking of fish. The fish species to be farmed must be vigorous, disease-free, black in color, and separated by size. The stocking density must be adapted to local conditions. Generally, the size of the fish species is about 100 grams per fish, and about 0.5 fish can be stocked per square meter.

4. Feeding and management

(1) Feeding. Fresh small fish are the main feed, preferably live bait, and cut into pieces of appropriate size according to the size of the fish. When feeding, feed in a fixed amount, generally accounting for 10 to 15% of the fish's body weight in the early stage and 5 to 10% in the later stage.

The best time to feed is between 5 and 6 in the morning and between 7 and 8 in the evening.

In order to save costs, white shrimp can be put into the fish pond for self-breeding or tilapia summer flower fish can be mixed with it. The leftover bait and feces of grouper can be used as bait for white shrimp and tilapia, which are high-quality baits for grouper, thus achieving a balanced ecology in the fish pond.

(2) Daily management. Groupers are very sensitive to changes in water environment conditions, so daily management should be careful. During breeding, the water temperature should be between 14 and 30°C, the salinity should be between 12 and 35%, the pH value should be between 7.8 and 8.4, and the dissolved oxygen should be above 4 mg/L. The daily change should not be too large, and the daily water exchange volume should generally be 1/3 to 1/4. During the breeding process, if the water exchange conditions are poor and the stocking density is too high, it is easy for the fish to float due to lack of oxygen. Mechanical pumping or oxygenation by aerator should be adopted in time. In addition, ponds should be inspected frequently and safety in production should be paid attention to.

(3) Harvest. Groupers have a poor tolerance to low temperatures, so it is generally best to harvest them before the cold snap arrives. A small number of groupers that do not meet commercial specifications should be overwintered.

Cage culture

1. The selection of breeding sites and the production of cages are similar to those of sea bass cage breeding.

2. Breeding season. The growth period of grouper in Zhejiang sea area is generally from May to November. It takes 14 to 16 months to raise grouper from 50 to 100 grams of fingerlings to 400 to 600 grams of commercial fish. Generally, two breeding cycles are used to arrange production. One is to raise the 100 grams of fingerlings purchased from May to July of the first year to a weight of 150 to 200 grams before winter, and then raise them to the market before winter of the second year after wintering; the other is to release large-sized fingerlings weighing 200 grams from April to May, and raise them to 400 to 600 grams of commercial fish for sale before winter of the same year.

3. Breeding density. Based on many years of production practice and test results, the stocking density of grouper cultured in cages is considered to be 10 kg/m2 per year for cages with a specification of 3×3×3 meters. This stocking density can achieve a higher survival rate, a high total weight gain rate and a high net yield, and a low feed coefficient.

4. Bait and feeding techniques. After being transported and placed in boxes, fish species need 7 to 10 days to adapt to environmental conditions before they can start to eat. They should be trained before formal feeding. The bait is mainly trash fish, and the bait coefficient is generally 7 to 8:1. There are several issues to pay attention to when using compound bait: First, grouper has a strong habit of eating bait. There is a long adaptation and transition process from feeding trash fish to feeding artificial compound bait. Second, the formula of compound bait should be reasonable, and its protein content should not be less than 40%. Third, if the grouper encounters an unpalatable or insufficiently fresh bait, it will vomit, so palatability needs to be considered. Fourth, it needs to be made into soft particles, and its size should be consistent with the caliber of the grouper. Groupers are suspicious and highly selective about bait. Therefore, feeding techniques have a great impact on grouper feeding. Feeding time is from 8 to 11 am, and the feeding amount is about 5 to 10% of the fish's body weight. The feeding method should be slow and wait until the fish have finished eating before feeding. Groupers generally do not eat bait that sinks to the bottom of the cage.

5. Wintering management: From December to April of the following year, the water temperature drops below 15℃, and groupers basically stop eating and swimming, entering the wintering stage.

(1) Selection of wintering sea area and cage structure. Select sea areas with slow current, small wind and waves, and minimum water temperature above 8°C. In order to reduce the impact of tides, wind and waves on wintering fish, some empty cages should be set up around the wintering cages to reduce the impact of water flow and wind and waves on the wintering cages. At the same time, a certain amount of wintering equipment should be set up in the cages, with sacks hung upside down or hard plastic cages and pipes attached.

(2) Stocking density of overwintering fish. Generally, the stocking density of fish weighing 200 g per fish is 350 to 400 per box. During the overwintering period, feeding should be done in warm weather with good winds and less feeding amount, but the bait quality should be better, and live bait should be fed as much as possible.

In addition, places where conditions permit can use indoor heating or land plastic greenhouses to overwinter.