Grouper is a kind of sea bass, the head is bigger than other fish, and most of the species belong to the large species, compared with other tropical fish, the body color is less bright, almost with the surrounding rock color is very similar. The order Perciformes, which includes the grouper, is one of the most diverse of the fishes. The grouper is large and laterally compressed. The body is covered with fine pectinate scales with complete lateral lines. The mouth is large and slightly inclined. There are well-developed auxiliary maxillae. There are a few large canine teeth at the anterior end of both jaws, and the teeth are finely pointed on both sides. Posterior margin of anterior gill cover bone serrate. Gill cover bone with two coarse spines. Plow bones and jaws finely dentate. Dorsal fin spines 11, strong, connected with the fins, fins 14 to 18.

Grouper habits

Grouper is a typical predatory carnivorous fish, it relies on the sensitive vision and light-sensitive, color-sensitive ability to differentiate, and often ferociously prey on fish, shrimp, crabs, octopus, and even barnacles and other marine organisms, especially like to eat fresh animals.

Grouper prices are currently marketed at 70 yuan per kilogram. There are places where the price of freshwater grouper is between 50 and 60 yuan, and in the case of dead freshwater grouper, the price is mostly between 40 and 50 yuan. And the price of wild grouper is basically around 80 yuan per kilogram.

Grouper farming profit according to an acre of input:

Fry cost: 4,000 tails 4 yuan / tail = 16,000 yuan;

Survival rate: 80% of the survival rate, the selling specification of the fish: 1 catty / stripe;

Feed cost: 3,200 tails 1 catty / tail 1.26.5 yuan = 24,960 yuan;

pond rent: 2,000 yuan;

Electricity cost: 3,000 yuan;

Labor: 3,000 yuan;

Pharmaceuticals: 1,000 yuan;

Total cost: 49,960,000 yuan;

Total income: 3,200 pounds 30 yuan/pound = 96,000 yuan;

Net profit: 46,000 yuan

Grouper farming prospects Grouper is A kind of low-fat, high-protein top quality edible fish, it is pushed as one of the four famous fish in China by Hong Kong and Macao. There are 12 species of grouper distributed along the coast of Fujian, among which the more common ones with higher economic value are red-spotted grouper, salmon-spotted grouper, clouded grouper and reticulated grouper. In recent years, the artificial breeding of grouper is more common, and the net box culture of grouper is an advanced culture method. Grouper has the title of "carp in the sea" and lives in the cracks of stones on the seashore, but their nutritional value is higher than carp and their meat is delicious, which is loved by many consumers.

Grouper culture technology fry cultivation

1, disinfection stocking: freshwater grouper fry cultivation pool to the earth pool is good, with lime pond disinfection and fertilization of water quality, fry should be stocked before the water test, the same pool stocking specifications require the same density depending on the bait, the level of breeding technology and cultivation specifications.

2, water quality management: freshwater grouper fry cultivation is easy to corrupt the water quality, should be changed every 3-5 days, each time the amount of water 1/4, can be transplanted in the pool of aquatic plants to purify the water quality and to facilitate the fry to hide, eat, fry specifications appear to be large differences between the sieve sub-farming.

Bait feeding

1, baby fish feeding: freshwater grouper's diet is carnivorous, baby fish in the pool to feed on zooplankton, with the growth of the fry, the amount of food increased, and the pool zooplankton gradually decreased, can be cultivated through fertilizer zooplankton, feeding soybean milk.

2, fish taming: freshwater grouper can be tamed when the fish reaches more than 3cm, first feed minced fish on the food table, add a small amount of matching feed mixed with minced fish after 2-3 days, and then gradually increase the matching feed until all the matching feed is used.

3, feeding management: freshwater grouper daily bait for about 20% of the weight of the fish, with feed protein content of 35-40%, animal protein should be more than 25%, other plant protein can be added raw materials, bait coefficient of 0.8 to 1.2 between.

Adult fish culture

1, a small amount of mixed culture: freshwater grouper can be mixed in a small amount of ponds, mixed culture of freshwater grouper per mu of water surface of 25 to 50 or so, after half a year of time, the average weight of the breeding can reach more than 300 grams, after a year of time, the weight of the breeding can reach 500 grams or so.

2, pond main culture: freshwater grouper can be mixed with tilapia, grass carp, crucian carp, etc., 150 to 200 tails per mu of water surface, 300 tails of mixed fish, after half a year of breeding the average weight of up to 200 grams or so, after a year of breeding weight of up to 250 grams or more.