1, black porgy basic information: Black porgy scientific name acanthopagrusschlegel, commonly known as sea carp, Harengula Negage, Green Lang, black cheek, black wings, black Negage, black and other legislation. 2, black porgy morphological characteristics: Black porgy side flat, elongated oval. Large head, front blunt tip, the first dorsal fin spines 11-12 soft rays 12. Two jaw ago Ministry have three door-like canines, followed by a very well-developed molars, maxillary side of the 4-5 columns, jaw side of the 3-4 columns, each three-door hoe-shaped bone in canines, followed by a very well-developed molars, 4-5 maxillary lateral portion of the column, the column jaw side of the 3-4, hoe bone and bone flap toothless. After the lower scales between the eyes and Preopercle. Lateral line scales 6-7 pieces, gray body, starting at the lateral line has black spots, often side with a few black cross. 3, black porgy Origin, season: Black porgy distributed in the western North Pacific. China's coastal regions are produced, the yellow, the Bohai yield more. The main fishing grounds in coastal Shandong, often mixed with other fish were caught together. Fishing season in spring and autumn. 4, black porgy habits: Hi black porgy live in mud at the bottom rocks and water quality environment. Black sea bream is wide temperature euryhaline fish survival salinity of 4.09 ‰ -35.0 ‰, growth adapt salinity 10.0 ‰ -30.0 ‰. Cold tolerance contests snapper strong survive temperature 4.3 ℃ -34.0 ℃, lethal low temperature 3.5 ℃, feeding water temperature 6 ℃, optimum growth temperature is 17.0-25.0 ℃. Black sea bream to carnivorous fish, adult fish to shellfish and small fish as the main food. In an age of natural waters is generally long tail fork 15cm, 2 age 21cm, 3 age 26cm, 4 age 30cm, 5 age 33cm, 7 age 37cm, 9 aged about 40cm, maximum individual length 45cm, generally grow faster than before age 4 fast. 5, black sea bream breeding habits: Sexual maturation process has a significant black porgy sex reversal phenomenon. Full body length is 10cm juvenile male; body length of 15-25cm for the individual stages of the typical androgynous gender; ends 25-30cm in length when sexual differentiation, the majority of individuals into females. From the point of view of age, age 2 fish mostly hermaphrodite, 3 years old fish more than 50% of the separation of male, 4 years old fish mostly females. The smallest male reproductive capacity having long 17cm, weight 145g, female body length 19.4cm, weight 236g. Black sea bream spawning temperature in the range of 14.5-24 ℃, due to different temperature regions, the breeding season there are certain differences, Shandong coastal early as late May-May, Jiangsu coast in early April to late-May. Black bream belongs to several types of mature spawning. Egg round, floating, egg diameter of 0.87-1.21mm, oil globule diameter of 0.20-0.23mm. 6, black porgy economic traits: Black bream fresh meat is one of the rare marine fish, black sea bream fast growth, broad diet, salt tolerance, and wide temperature resistance, easy feeding, disease resistance, seawater and brackish water aquaculture fine varieties. Commercial fish price of 30 yuan / kg, is China's coastal provinces from south to north bay, estuary area a better breeding species. 7, black sea bream farming conditions: Our Yellow Sea Fisheries Research Institute in 1959 and the Institute of Marine Research in Rizhao City, Shandong Province, the use of black sea bream maturation artificial insemination, incubation experiment achieved initial success. 1960 marine research so black porgy fertilized egg hatch natural nursery for the materials tested in the room, and the morphology of the black sea bream egg larvae, juveniles were observed. 1980-1982 Fujian Provincial Fisheries Research Institute to carry out artificial propagation and breeding black porgy research techniques of cultivating seedlings 42,000, of which the reproductive season 1980-1981 broodstock caught from the sea in the region, 1982 is adopted in ponds broodstock Apart from some broodstock spawning naturally without oxytocin, in general, the use of oxytocin after spawning or artificial insemination in natural spawning pool. 1990 Ningbo Fisheries Research Institute has been releasing 100,000 seedlings of black porgy. Jiangsu Institute of Marine artificial propagation in black porgy, larger nursery and develop technological progress achieved. 8, black porgy economic benefits: For example in aquaculture sea cages, each cage production costs 1,000 yuan, seed fee is $ 5 / tail (3 two or more), stocking 500 per case, labor costs 1,000 yuan, feed conversion ratio of 8, the price 0.3 yuan / kg, the black sea bream farming costs per case: 1000 +1000 +2500 +400 × 8 × 0.4 = 5780 (yuan), each containing 400 pounds of adult fish, the price is 30 yuan / kg, the annual income 12,000 yuan, annual profit of 6,200 yuan.
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Basic Information
The scientific name of black porgy Acanthopagrus schlegel, commonly known as sea carp, Harengula Negage, Green Lang, gilthead, cousins Lap, black wings, black Negage, black stand, sea carp, brass basin fish.
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Morphology
Black porgy side flat, elongated oval. Large head, front blunt tip, the first dorsal fin spines 11-12 soft rays 12. Two jaw front of the door-like canines have three, followed by a very well-developed molars, maxillary lateral portion of 4-5 bar, 3-4 bar side of the lower jaw, hoe-shaped bone in each three-door canines, followed by a very well-developed molars, maxillary lateral portion of 4-5 bar, 3-4 bar side of the lower jaw, hoe bone and bone flap toothless. After the lower scales between the eyes and Preopercle. Lateral line scales 6-7 pieces, gray body, starting at the lateral line has black spots, often side with a few black cross.
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Producing real estate season
Black porgy distributed in the western North Pacific. China's coastal regions are produced, the yellow, the Bohai yield more. The main fishing grounds in coastal Shandong, often mixed with other fish were caught together. Fishing season in spring and autumn.
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Habits
黑鲷 生活习性
Hi black porgy live in mud at the bottom rocks and water quality environment. Black sea bream is wide temperature euryhaline fish survival salinity of 4.09 ‰ -35.0 ‰, growth adapt salinity 10.0 ‰ -30.0 ‰. Cold tolerance contests snapper strong survive temperature 4.3 ℃ -34.0 ℃, lethal low temperature 3.5 ℃, feeding water temperature 6 ℃, optimum growth temperature is 17.0-25.0 ℃. Black sea bream to carnivorous fish, adult fish to shellfish and small fish as the main food. In an age of natural waters is generally long tail fork 15cm, 2 age 21cm, 3 age 26cm, 4 age 30cm, 5 age 33cm, 7 age 37cm, 9 aged about 40cm, maximum individual length 45cm, generally grow faster than before age 4 fast.
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Breeding habits
Sexual maturation process has a significant black porgy sex reversal phenomenon. Full body length is 10cm juvenile male; body length of 15-25cm for the individual stages of the typical androgynous gender; ends 25-30cm in length when sexual differentiation, the majority of individuals into females. From the point of view of age, age 2 fish mostly hermaphrodite, 3 years old fish more than 50% of the separation of male, 4 years old fish mostly females. The smallest male reproductive capacity having long 17cm, weight 145g, female body length 19.4cm, weight 236g. Black sea bream spawning temperature in the range of 14.5-24 ℃, due to different temperature regions, the breeding season there are certain differences, Shandong coastal early as late May-May, Jiangsu coast in early April to late-May. Black bream belongs to several types of mature spawning. Egg round, floating, egg diameter of 0.87-1.21mm, oil globule diameter of 0.20-0.23mm.
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Economic traits
Black bream fresh meat is one of the rare marine fish, black sea bream fast growth, broad diet, salt tolerance, and wide temperature resistance, easy feeding, disease resistance, seawater and brackish water aquaculture fine varieties. Commercial fish price of 30 yuan / kg, is China's coastal provinces from south to north bay, estuary area a better breeding species.
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Breeding conditions
Our Yellow Sea Fisheries Research Institute in 1959 and the Institute of Marine Research in Rizhao City, Shandong Province, the use of black sea bream maturation artificial insemination, incubation experiment achieved initial success. 1960 marine research so black porgy fertilized egg hatch natural nursery for the materials tested in the room, and the morphology of the black sea bream egg larvae, juveniles were observed. 1980-1982 Fujian Provincial Fisheries Research Institute to carry out artificial propagation and breeding black porgy research techniques of cultivating seedlings 42,000, of which the reproductive season 1980-1981 broodstock caught from the sea in the region, 1982 is adopted in ponds broodstock Apart from some broodstock spawning naturally without oxytocin, in general, the use of oxytocin after spawning or artificial insemination in natural spawning pool. 1990 Ningbo Fisheries Research Institute has been releasing 100,000 seedlings of black porgy. Jiangsu Institute of Marine artificial propagation in black porgy, larger nursery and develop technological progress achieved.
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Economic
黑鲷 经济效益
For example in aquaculture sea cages, each cage production costs 1,000 yuan, seed fee is $ 5 / tail (3 two or more), stocking 500 per case, labor costs 1,000 yuan, feed conversion ratio of 8, the price 0.3 yuan / kg, the black sea bream farming costs per case: 1000 +1000 +2500 +400 × 8 × 0.4 = 5780 (yuan), each containing 400 pounds of adult fish, the price is 30 yuan / kg, the annual income 12,000 yuan, annual profit of 6,200 yuan.
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Fishing Methods
黑鲷 垂钓方法
Nereis bait, shrimp, oyster meat, small shrimp, small live crabs, bivalve crab, horseshoe crab paste, squid paste dough, Intestinal and so on. Fishing period 1-12, 5-10 season Lap Cantonese commonly known as black or dark (fish stand) Taiwan also commonly known as black Ge Wuge The Hong Kong and Macao and Zhuhai favorite anglers also known as black sand nigger black one Ugutsu Black porgy fish for advanced distributed in Japan, Korea, China and Taiwan and other places of the coast, harbors and rivers imports, an inner bay resistance, the ability to adapt to the environment, to adapt to the range is wider, the ability to adapt to the low temperature also quite strong, but that is not feeding below 10 ℃, 5 ℃ less likely that there is death. Black porgy high evaluation for the preferences of the species anglers, while its cold period, no freeze to death in the case, we can see they are quite hardy in fish, marine fish farming has become an important aquaculture industry objects. Black bream are warm, tropical coastal benthic omnivorous fish, like sand and mud bottom habitat in the waters of the inner bay, and the intersection of reef sand shore waters, sometimes entering estuaries, larval stage are all male, to 3 to 4 years only after the transition to female, naturally sensitive, suspicious, alert and strong. Black porgy also on strong ability to adapt to salt, the salinity of the water can be in any breeding, black porgy's very fast growth rate, the water temperature has a strong ability to adapt to the water temperature is between l0 ℃ ~ 32 ℃, able to adapt to survive sex bias carnivorous omnivores, like to eat shellfish with shells and small oysters, crabs and other small, large black porgy, more will come ashore only at night to feed. Black bream fishing groups: specifically, there are two ways to catch black sea bream, one is intuitively Diaofa, another is a buoy Diaofa, both of which Diaofa among Diaofa in the direct sense, but also evolved from Japan before the fight and fall fishing method, and buoy fishing method and divided into long-buoys, buoys Awa single cone, double single cone water buoys, Tengu diving buoys, even in recent years, Taiwan, Hong Kong, Japan and some fishermen, have to try to figure out a full swimming in tips, or half swimming Diaofa etc., to anglers just getting started, it seems to be an unfathomable knowledge, in fact, as long as you are interested in this fishing trips, without affecting the work and his family circumstances, in time, should also master a ah! Most black porgy looking for something to eat when you have several common features: they know how to use the barrier reef underwater, hiding around (especially the rear) opportunistic eating, they often waited at sea when the waves provoked marked rock recoil The foam tape perimeter, or even burst into white foam pile directly to find food. Why do you like black porgy reef underwater hiding behind? The reason is: A rock behind the relatively avoid traffic, you can save your energy. Second, they can maneuver into the flowing water to grab food. Third, the food will often automatically delivered to their doorsteps. . Water formed behind a stone nest rewind stream will come in the volume of food. As for the foam with the meaning is: One, mostly rocky fishing species quite interested in eating seaweed - especially growing algae in the intertidal zone, and foam tape that is happening in this area of the phenomenon. Second, even if the do not eat algae, shore or near shore waters * also important where the supply of food; recoil when sea waves washing on the rocks, it will take many organisms, organic matter, etc. together poured into the depths, and then With the white foam crest out, so the fish often waited at the periphery pick up these foods with foam. Third, the waves from the stone sink back into the sea, the air is drawn into the water will create a lot of oxygen, so fish happy gathered. Black porgy fish is fairly low-level activity, and not only shallow coastal fish tracking, depth of seven or 80-foot fishing place also to get it, even if occasionally ran pelagic waters, is bound to be a barrier in place. There are three options to consider punctuation elements: trends, reefs, foam tape. Chinese fishing net 0j? F D. | & V K, b This foam tape inside the reef and the importance has been said earlier, and even beginners can easily see their location, but the trend of it? What are its types? How do we know where it is? Method is very simple: First, find the flow - the so-called the "flow", not a specific flow conditions fixed address, but relatively speaking, an area relatively strong, fast, the most important one water potential. Typically the kind of direction is fixed (mean high tide or low tide in the direction of the process of fixing, the tide can change direction after conversion.) And very large surface waves, buoy fishing group entered will be quickly taken away, that the use of large buoys also can not stay, which is known as the flow velocity but sometimes not so strong nor so large undulating water potential will be called the stream, the reason is its relationship with the fishing ground water in comparison to other more powerful the rules. Second, look for tributaries - this "tributary" nor the word is a proper noun, but relative to the flow is relatively small in terms of area, slow, and not likely to cause changes in water potential waves. Such trends have pushed along the coast who have rushed to the coast or the outward flow, its causes, including wind, wave, tidal phenomena and the flow branches, etc., and will likely be affected by coastal topography, sea state influence and change direction, speed scale. In general, this water is not easy to distinguish with the ocean surface state (at least for beginners often can not see), but it is not difficult to find it * some corroboration, that is, by observation floats, bait, buoys, etc. and to interpret the trend Third, look for tidal projects - so-called "Tide Head" is a direction different from two shares (or more) water each intersection, impact, or orientation, although the same, but different flow rates of two shares of water rubbing against each other, resulting in a surface is smooth and no wave, seemingly little flow, debris easily stagnant water areas. This place is also not difficult to distinguish with the naked eye, you only see the smooth and no waves, debris easily stagnant waters, the fishing groups seen after that it will continue to invest in it rather easy to spin drift away, is the wave of projects that carry on. Fourth, looking back with - If you hit the tide movement disorders (such as reefs, convex cape), or sea depth change, or is passing from the still waters when the next are likely to cause water cook crest spin group, which is "back with." Just watch the aforementioned angler there are obstacles of the Department, the Department depth variation, still waters and water at the junction, etc., it is easy to find it. Fifth, find backwash wave - a wave of international road flock to shore, with a large share of large stocks marked reef sea water, and then pour back into the sea Fan Shen, there must be a path for the water to flow out, such a path is called "backwash tide", which direction are out from the shore by currents. To find backwash tide, in addition to the flow by observing buoys verified, you can also pay attention to see the white foam waves caused, if there is a continuing drag out a considerable distance out whitish waters (the so-called gonorrhea is fine white foam not really whitened color caused by water turbidity), that's it!
