Aquaculture Lists
-
Culture of adult black fish
Black fish is a valuable freshwater fish with high economic value, which is called "the treasure of fish". It is very nutritious and contains a lot of protein, which is higher than that of chicken and beef. From the point of view of nutrition, black fish is a kind of advanced health food with comprehensive nutrition and delicious meat. Black fish adult fish culture refers to the production process of cultivating fish species into edible fish in small water bodies such as ponds, ponds, cages and so on. There are two kinds of artificially cultured black fish: extensive mixed culture and intensive monoculture. Extensive mixed culture refers to mixed culture with four fish and other fish in fishing ponds. Intensive order
2019-01-16 -
Daily Detection of Shrimp during Culture period
Shrimp culture technicians should patrol the pond once in the early morning and evening every day to carefully observe the environmental changes, water color and safety of shrimp activities, and keep records. The main contents of the test are as follows: 1. During the cultivation period, viral pathogen detection should be done frequently, and Tmure staining method and nucleic acid probe can be used. PCR and other methods. two。 Remove crabs and rats around shrimp ponds. Strictly prevent the discharge of dead shrimp and sick shrimp from other shrimp ponds. 3. Measure water temperature, dissolved oxygen and other water quality elements. Daily
2019-01-16 -
It is exquisite to release fish in early spring.
The quality of fish species of the same age requires the same specifications, similar body length and weight, thick back muscles, bright color, intact scales and fins, normal activity, strong traceability, Gill cover not stretched in the basin after leaving the water, the tail does not bend, beating more than, there are no scars and parasites on the body surface. Disinfection of fish species some farmers do not disinfect fish seeds at all, resulting in high incidence and poor control effect with medicine. in fact, as long as we do a good job in disinfection of fish species, we can often get twice the result with half the effort in the prevention of fish diseases.
2019-01-16 -
How to choose to kiss eel
If we want to choose the seedlings with more eggs, high fertilization rate, emergence rate and good quality, we must choose the rice field eel with a certain age, weight, strong physique, no serious disease and trauma as the parent eel. In the non-breeding season, it is difficult to distinguish between female and male eel in appearance, and usually stay on the basis of body length. Most of the ricefield eels are female when their body length is 20 cm-35 cm, and most of them are male when their body length is more than 45 cm. Under normal circumstances, you can choose to stay at 3:1 according to the above two body length groups.
2019-01-16 -
Baolian lantern fish
The country of origin is the middle and lower reaches of the Amazon. The fish is 4 cm ~ 5 cm long, spindle-shaped, flattened laterally. The body size is slightly wider than that of the traffic light fish. The dorsal ventral margin is a shallow arc, the head and tail stalk are relatively wide, and the snout end is round and obtuse. The mouth is slightly larger and the eyes are also large, located in the front and upper part of the head. The shape of the dorsal fin and pectoral fin is normal, and the distance between the starting point of the dorsal fin and the rostral end is slightly shorter than that between the caudal fin base. The anal fin is extended and the caudal fin is forked. The body color is very bright, and the back is yellowish green. The fish features on both sides, with a wide blue longitudinal band from the posterior edge of the eye to the tail stalk.
2019-01-16 -
Sashimi
The Japanese call themselves "thorough fish eaters". Japan's fish catch ranks first in the world, but it also imports a large number of fish and shrimp from abroad every year, eating more than 100 jin of fish per capita a year, exceeding rice consumption. Japanese eat fish raw, cooked, dried, pickled and other ways to eat, and sashimi is the most expensive. The highest etiquette is to entertain sashimi at state banquets or civilian treats. The Japanese call sashimi "Shashimi". The general sashimi is made of skipjack, snapper and sea bass. The most high-end sashimi is tuna sashimi.
2019-01-16 -
Efficient cultivation of Pelteobagrus fulvidraco in miniature cage
Pelteobagrus fulvidraco cultured in ponds with other aquatic species has the advantages of simple operation, low investment, easy feeding, fast growth and high benefit, so it is a high-yield feeding method to improve the utilization rate of water surface. The main results are as follows: 1 the cage is stitched with polyethylene mesh, which is 2m long, 2m wide and 1.2m high, and the mesh is 0.5~1cm. The cage adopts a closed stretcher floating type, the bottom uses 9-purpose mesh cloth as the cushion, and the edge of the cushion is high 20cm, in order to reduce the loss of bait, and the upper part of the cage is higher than the water surface 30cm.
2019-01-16 -
Measures for Fisheries Reconstruction after Rain and Snow freezing disaster in South China
Since the beginning of January 2008, the freezing weather of rain and snow has had a serious impact on fishery production in many provinces and cities in southern China. According to incomplete statistics, the loss of frozen fish and shrimp in southern provinces exceeds 10 billion yuan. In view of this, this paper puts forward some measures and suggestions for the reconstruction of freshwater fisheries after the rain and snow freezing disaster in the south for reference. The types of disasters are distinguished from the types of farming and regions. At present, the main types of disasters are as follows: 1. Tilapia aquaculture: tilapia aquaculture has suffered the most from the cold wave this winter
2019-01-16 -
Processing Liquor-Soaked Crabs
Wash and drain the fresh crabs, open the navel and insert a small hole with a bamboo stick, cover the navel with pepper and salt. Prepare pickling solution: 100 kg of fresh crab, 10 kg of sugar, 10 kg of refined salt, 6 kg of ginger juice, 40 kg of soy sauce, 0.6 kg of pepper and 20 kg of yellow rice wine. Mix the above raw materials well, pour them into the pickled pottery jar, submerge the crab body, add bamboo curtain and pressing stone to keep the crab body from being exposed on the liquid, and finally seal the jar mouth. After 3-4 days, the delicious drunken products can be put on the market at any time.
2019-01-16 -
Preparation of fish scale glue
1. Technological process: fish scale → washing, → soaking, → soaking, → liming, → flushing, → boiling, → filtering, → solidification, → scraping, → drying → products. two。 The technological process. After washing, the fish scales are soaked in 5% caustic soda solution for about 5 minutes to remove grease, fat skin and expand the scales. Rinse the alkali-soaked fish scales with water immediately, then soak them in clean water to remove alkalinity, until phenolphthalein does not produce red. Then the washed fish scales were immersed in hydrochloric acid, and the dosage was 12% (31% volume concentration of hydrochloric acid), and then decreased gradually, 8%, 3%,
2019-01-16 -
Prevention of diseases in European eel
(1) Do a good job in water disinfection, and use effective drugs and methods to kill parasites, viruses and bacteria in water: ① Sprinkle with 0.3 g/m3 (cubic meter) Yuchongqing No.2, once every 6 days. To kill parasites and eggs in water and prevent ring worm disease;② Sprinkle with 0.2g/m3 chlorine-rich whole pool once every 6 days to kill viruses and bacteria in water;③ Sprinkle with 0.3g/m3 eel net whole pool once every 6 days. Kill bacteria, fungi and protozoa in water. Note: The above three
2019-01-16 -
Pay attention to the use of fishery medicine in summer
Summer is the period of high incidence of fish disease, and it is also the peak period for the use of fishery drugs. The following points should be paid attention to: first, when two kinds of drugs are mixed, they should be dissolved in water and then mixed. Copper sulfate, ferrous sulfate and potassium permanganate should all be dissolved in buckets or pots with water. Bleach, trichlorfon and other powder drugs, should first be adjusted into paste with a small amount of water, and then diluted with water, so as not to be caked and eaten by fish. The following drugs should not be mixed: bleach and quicklime, copper sulfate and quicklime, trichlorfon and quicklime. II. Shi
2019-01-16 -
Gefa hamster tortoise
Family name: Chinese name: Gefa hamster turtle scientific name: Gopheruspolyphemus genus name: Gopherus herbivore: herbivorous, feeding on grass and fruit. Distribution: southeastern United States. Morphological features: the maximum nail length is 38.1 cm. The distance from the first double toe claw root to the third double toe claw root of the forelimb is the same as that from the first double toe claw root of the hindlimb to the fourth double toe claw root.
2019-01-16 -
Nine treatments for Anchor head Disease of Fish
Anchorage is a parasitic copepod, which is very harmful to fish. There are four common anchor heads: polymorphic anchor head, carp anchor head, grass carp anchor head and four-ball anchor head. The anchor head fish can parasitize on both juvenile and adult fish in that year, with its head under the host's muscles or scales, and its chest and abdomen exposed outside the host. Needle-like pathogens can be seen with the naked eye at the parasitic part of the anchor head. If the Anchor head Ctenopharyngodon idellus parasites on the fish for a long time, protozoa and algae are often found on the surface of the fish, and the naked eye looks like a bunch of gray.
2019-01-16 -
Wu Guo fish
Also known as Nanyang crucian carp, African larvae, Fushou fish; (British) Tilapia. Tilapia contains a variety of fish, both purebred and hybrid, and their shapes are similar. The body is slightly lengthened and flattened on the side, showing an oval shape, with a bulge on the back of the head and a round abdomen. The lower jaw is slightly longer than the upper jaw, and the lips are thick and developed. The operculum has no spines. The dorsal fin is extended and the starting point of the anal fin is below the hard spine at the end of the dorsal fin. The shape of the anal fin is opposite to the shape of a soft strip of the dorsal fin; the rear fins are longer and extend to the caudal fin after being pressed. The caudal fin is flat and round to form a micro-concave shape.
2019-01-16 -
Preparation method of Shrimp Sauce
The raw materials such as shrimp head and shrimp tail used in the processing of shrimp head paste are the abandoned parts when processing frozen shrimp. These abandoned shrimp heads, tails and shells can be classified and processed separately or mixed. Production method 1. Wash the above fresh shrimp head, shrimp tail, shrimp shell and other raw materials with water, drain and deep-fry, deep-fry at about 160℃ oil temperature for about 2 minutes. After deep frying, although its moisture content is only about 20.4%, it is the same as the mouth of the dried shrimp head, shrimp tail and so on.
2019-01-16 -
Triplophysa orientalis
Common Name: Loach Rod Origin and Date of Birth: Widely distributed in Qinghai, Xizang, Gansu, ** and western Sichuan. Description: Lower mouth, wider mouth. Lips thick, upper lip ruffled, lower lip papillated and deeply ruffled, lower jaw spatulate. The ends of the pelvic fins extend back to or beyond the anus. The tail is higher. The skin is smooth and scaleless. demersal fish that lives in slow streams or shallow waters with gravel and weeds and feeds on animal food. Large individuals, 142 mm long individuals have been seen, numerous, can form a zone
2019-01-16 -
Why do fish frequently get sick?
In aquaculture practice, there is often a phenomenon that varieties with strong disease resistance in the wild become susceptible to diseases because they live in the aquaculture environment for a long time. The disease resistance of fish is mainly determined by its genetic factors, but in the end, the disease is determined by the environment. All kinds of stimuli of environment to fish are environmental stress factors. In aquaculture ecosystems, stresses on fish are often caused by environmental factors such as Nonionic ammonia, dissolved oxygen, pH and water temperature. Generally speaking, aquatic products
2019-01-16 -
Processing of silver carp and bighead carp
Silver carp and bighead carp among the "four major fishes" are often sold poorly due to more spines between muscles and taste inferior to other fish. Therefore, the problem of processing and utilizing silver carp and bighead carp needs to be solved urgently. The following is a description of the use of silver carp, bighead carp processing method of making fish round. The formula of auxiliary materials: according to 50kg of fish meat, 1kg of salt, 3kg of starch, 0.5kg of granulated sugar, 0.075kg of monosodium glutamate, proper amount of ginger juice, and the water content is generally 50% to 60% of the weight of fish meat. Key points of operation: heavy selection
2019-01-16 -
How to distinguish between good and bad fish species
The purchase of high-quality fish species is the key to improve the survival rate, and the quality of fry can be identified according to body color, activity, sampling inspection and other indicators. Fish fry body color high-quality fish fry group body color is the same, the body is smooth and clean, do not drag mud; inferior fish fry group body color is different, commonly known as color fry, fish body drag mud. The activity stirred the water of the fry out of the whirlpool, and most of the high-quality fry swam against the current at the edge of the whirlpool, while most of the inferior fry were stirred into the whirlpool. Sample inspection to move the water surface, if you can move against the wind and against the current, pour the water.
2019-01-16