211 results about "Finless eel" patented technology

The invention relates to a finless eel butchering machine, belonging to the field of processing machinery of marine products. The machine comprises a charging basket, an upper pair roller, a lower pair roller, a cutting knife, a press roller, a scraper, a supporting plate, a material receiving barrel, a stander and a motor, etc., wherein, one side of the stander is provided with the charging basket, the other side thereof is provided with the upper and the lower pair rollers and the press roller, and an upper and a lower pair roll and a press roll are respectively installed on the upper and the lower pair rollers and the press roller. The lower part of the stander is provided with the motor; the same ends of the upper pair roller and the press roller and the motor are provided with pulleys, other end of the upper pair roller and the same end of the lower pair roller are provided with drive gears; the supporting plate is arranged under the press roller, and the scraper and the cutting knife are arranged on the supporting plate. The butchering machine finishes butchering finless eel by means of automatically entering or going out of a feeding hole according to the habit that the eel likes entering a hole, snatching randomly by the pair rolls, squeezing and sliding cutting, thus solving the problem that the existing butchering device has complicated structure, low working efficiency and great labor intensity by adopting manual feeding, meeting the random butchering demands of families and restaurants, etc., and being capable of being made into a production line for deep processing of finless eel.

Disclosed is a rice field eel fodder which is prepared from fish meal, flour, soya bean waste, brewer's yeast grease, cereal meal, calamari marrow powder, fish oil, anti-fungus agent, oxyneurine, rice field eel multivitamin, rice field eel minerals through the steps of weighing raw material, first mixing with blenders, ultramicro disintegrating, cleaning and roguing, second mixing with blenders, low-temperature bulking with swelling machines, drying with drying-machines, spraying fish oil through a grease outside spraying system, drying with a refrigerator, sifting with grading sieves and sacking.

The invention provides a method for breeding finless eel in pond in order to solve the problem that the fertility rate, the hatchability and the survival rate of the finless eel are low during the fully artificial propagation process at present, and therefore, the scale breeding requirements can not be satisfied. The method comprises the following steps: simulating a natural breeding environment of the finless eel in the pond, accelerating maturity of the finless eel by an artificial method, enabling a female finless eel and a male finless eel to voluntarily mate and propagate in the pond, andsufficiently utilizing a foam nest required in natural propagation to incubate, thereby greatly increasing the fertility rate, the hatchability and the survival rate of the finless eel, and thereforethe problem of scale breeding of finless eel fries.

The invention belongs to the aquaculture technology field, in particular relating to an artificial control method for the improvement of female finless eel parent fecundity. The finless eel has special physiological phenomena and sex reversal characteristics with small size, large egg granules and low fecundity. Thus the scale finless eel propagation is subject to the restrictions of the female finless eel parent self-conditions. In the invention, through the artificial simulation of female finless eel culture and development environment, the rational selection of parental finless eels, the reasonable stocking density arrangement, the appropriate feeding and management methods, the pre-oviposition period intensive culture and the artificial control measures, the female finless eel fecundity in natural state can be enhanced to the fecundity up to 450 to 1300 grains each and the 680 grains average level from 170 to 650 grains each and the average 260 grains. Therefore, the average fecundity of finless eel is improved by 161%.

The invention relates to a method for culturing finless eel and freshwater crayfish in a pond, which includes (1) selecting pond or low-level pond, or opening ditches such as 'curve', 'well' or 'field' font, keeping sluice above 1.5m in the pond or ditch; (2) clearing and sterilizing the pond, keeping the water depth for 30cm, fertilizing and planting aquatic; (3)the net box of finless eel being an open style, planting water peanut in the box; (4) regulating water quality by stocking silver carp and bighead carp, putting healthy fingerlings of the freshwater crayfish one off in the last decades of April (100kg / 666m2), or putting mature fingerlings of the freshwater crayfish whose female and male ratio is 2:1 in the autumn; (5) stocking young finless eels from the last ten-day of April to the first ten-day of May or the last decades of July (1kg / m2); (6) feeding food per day, the amount of which are 5-8% of the weight of freshwater crayfish; (7)subduing feeds after young finless eels are put in the box and hungry for 3 days, the weight ratio of minced earthworm or fresh fish and finless eel is 5:1, 4:1, 3:1 and 2:1; (8) strengthening water quality management, fertilizing management and prophylaxis osamu work of the aquaculture water and inside the net box.

The present invention relates to an ecological cage culture method of finless eel, including lotus rhizome, finless eel, interval culture and using engineering fly-maggot as feed. Said invention provides a good culture environment for grwoth of finless eel, use high-quality high protein engineering fly-maggot as feed so as to can greatly raise finless eel culture density, can shorten feeding period, and its yield can be raised by 50-100%.

The invention provides a loach or finless eel slaughtering device, and belongs to the field of the aquatic product processing machinery. The loach or finless eel slaughtering device comprises a machine frame, and a slaughtering deboning unit and a driving unit which are installed on the machine frame. The slaughtering deboning unit comprises a main machine base and an upper cover passage limiting device. The main machine base is provided with a feeding port, a belly opening mechanism, a deboning viscera-removing mechanism and a discharging port. The belly opening mechanism comprises a clamping conveying structure and an annular belly opening blade. The deboning viscera-removing mechanism comprises an annular deboning viscera-removing blade, an annular bone-meat separating blade and an annular conveying needle plate. The loach or finless eel slaughtering device has the beneficial effect of solving the problems of the current loach or finless eel slaughtering device in the prior art that the bones cannot be removed, the viscera cannot be cleaned completely, the head cannot be separated, the loach or finless eel cannot be cut into slices, and the missing slaughtering exists.

The invention discloses a method for integrated culture of rice-finless eel-crayfishp-trionyx sinensis. The method comprises the following steps: placing myriophyllum aquaticum in a ring-shaped ditchof a paddy field; putting crayfish seedlings in April or August, putting trionyx sinensis seedlings and cipangopaludina cahayensis in May, and putting finless eel seedlings in late June to early July;performing feeding; and catching crayfish in early June or early October, and catching finless eels and trionyx sinensis in November to December. According to the method for integrated culture of therice-finless eel-crayfish-trionyx sinensis, ecosystem biodiversity of the paddy field is improved, cannibalism degree of the crayfish is reduced, requirement for live baits of the finless eels and the trionyx sinensis is satisfied; and the method has the advantages of higher biological diversity, easy catching, adequate supply of live baits, more stable culture yields, higher economic benefits, and the likes.

The invention discloses a fermented type Chinese herbal medicine immunological enhancer for finless eel, which has a plurality of effects of prevention, health care, treatment, immune regulation and the like, and is an ideal, green, environment-friendly, safe and novel feed additive for substituting antibiotics medicaments. The fermented type Chinese herbal medicine feed additive is prepared from compound Chinese herbal medicines through processes of Chinese herbal medicine ultrasonic-assisted extraction and multi-strain two-step fermentation, has double advantages of the Chinese herbal medicines and probiotics, can effectively regulate intestinal health of the finless eel, can treat both symptoms and root causes, can supporting the healthy energy and cultivate vigor, can keep intestinal tract microecological balance and the optimal immune state, can improve digestibility of nutrition substances, can improve immunity of the finless eel body, can increase breeding income, can lower breeding risks, can substitute antibiotics in use, has no bad influences on the finless eel, and is safe to use and free from problems such as medicine residue and medicament resistance, has a wide market prospect.

The invention discloses a method for breeding loaches in a rice field. The method is characterized in that the rice field where water is sufficient, irrigation and drainage are convenient, the water retaining capacity is strong, the ecological environment is good, no pollution source exists around, soil is fertile and bottom materials are natural is selected, annular loach breeding furrows are dug around the inner side of ridges of the rice field, the width of each furrow is 2 meters, the depth of each furrow is 1 meter, the annular loach breeding furrows are 2 meters far away from the ridges, the corners of the annular loach breeding furrows are arc, a cross-shaped or a line-shaped field furrow is dug in the middle of the field, the width of the field furrow ranges from 0.5 meter to 1 meter, the depth of the field furrow is 0.5 meter, crops are planted on the ridges, meanwhile, loaches are thrown into the furrows to be bred, and plant fodder is used for feeding the loaches. A stable ecological system can be formed, the immunity of the loaches can be enhanced, the survival rate of the loaches is improved, the survival rate and the yield of finless eels can be improved, and economic benefits are obvious.

The invention discloses a finless eel pond-net cage ecological culture method, and belongs to the technical field of aquaculture. The method includes the steps of (1) finless eel pond-net cage ecological system construction including A, pond preparation, B, net cage arrangement, C in-cage ecological treatment and D, pond ecological treatment; (2) finless eel breeding; (3) food habit domestication and bait feeding; (4) daily management; (5) finless eel catching. Compared with the prior art, the method has the advantages that a pond-net cage ecological system is successfully constructed by utilizing biological characteristics and feeding habits of several kinds of cultured fishes, net cages need not to be scrubbed frequently, and manual labor force is saved; frequent water transfer is not required, culture expenditure is saved; the finless eel are low in morbidity, less in drug use, high in survival rate, high in quality and good in taste; meanwhile, considerable profit is obtained from polyculture fishes.

The invention belongs to the technical field of aquiculture, and particularly relates to an eel-rice symbiotic cultivation method. The eel-rice symbiotic cultivation method disclosed by the invention comprises the following steps: 1. selecting a rice field; 2. arranging fixed pound nets in a water inlet and a water outlet; 3. digging eel ditches and eel pits in the rice field; 4. defining stocking time: stocking eels after paddy rice seedlings revive; 5. three days later after the eels are stocked, starting to feed the eels; 6. fishing and selling, wherein un-fished finless eels overwinters in the rice field naturally. The method has the advantage that finless eels are the natural enemy of rice insects, and can eat a large proportion of insects to reduce the quantity of parasitic insects in paddy rice, so that no disinfestant is used during the whole growing process of the paddy rice. Therefore, rice produced according to the method is high in quality, nutritional and tasty; the yields of eels and rice produced according to the method are high.

The invention discloses special feed for finless eels. The special feed consists of the following ingredients in parts by weight: 30 to 40 parts of fish meal, 5 to 10 parts of shrimp shell meal, 10 to 20 parts of bean meal, 10 to 20 parts of corn gluten meal, 13 to 15 parts of earthworm meal, 10 to 15 parts of blood meal, 3 to 5 parts of vital gluten, 1 to 2 parts of monocalcium phosphate, 3 to 5 parts of complex vitamins, 3 to 5 parts of orange peel meal, 3 to 5 parts of pine needle meal, 4 to 6 parts of southernwood meal, 2 to 4 parts of betain and 5 to 7 parts of purslane meal. The special feed has the advantages that the nutrition ingredient matching is reasonable; high-quality protein and energy substances can be provided for the finless eels; the disease resistance capability of the finless eels can be enhanced; the feed coefficient is reduced; the delivery time of the finless eels is reduced; the feed utilization rate is improved; the input-output cost performance is high; the special feed is worth of being applied and popularized.

The invention relates to a semi-artificial bionic breeding method of a finless eel. The method is characterized by adopting the following five processes: obtaining and selecting a parent finless eel; ripening the parent finless eel and carrying out hasten parturition on the parent finless eel; preparing a bionic breeding pool (mating and spawning pool) condition; managing mating, spawning and incubating, catching and cultivating eel seeding, and transferring the captured eel seeding into a special pool to cultivate. According to the semi-artificial simulated ecological breeding method, the breeding yield and the efficiency of the finless eel can be effectively improved; the brood amount, the spawning rate, the fertility rate and the seeding survival rate of the parent can be effectively improved by simulating natural simulated ecological breeding, and organically combining artificial propagation with the natural breeding habit of the finless eel through a proven technique of artificial ripening and hasten parturition commonly used on aquatic products, and the survival rate of the parent is also obviously increased in comparison with a whole artificial reproduction technology. Thus, the breeding yield and the efficiency of the finless eel are improved, and the enough seed matching is provided for large-scale cultivation of the finless eel.

The invention relates to full-automatic finless eel or loach processing equipment and belongs to the field of aquatic product processing machinery. The equipment comprises a fixing rack, an adjustable rack, a feed barrel, a discharge barrel, a belly dissecting tool, a back dissecting tool and a knurling tool, a protective cover is arranged on the fixing rack, an upper fixed supporting plate and a lower fixed supporting plate are vertically arranged on the part, located inside the protective cover, of the fixing rack, a feed channel A is arranged between the upper fixed supporting plate and the lower fixed supporting plate, the feed barrel is installed on the part, located at the side of the feed channel A, of the fixing rack, and the feed barrel is communicated with the feed channel A. When the equipment works, finless eels or loaches are poured into the feed barrel and randomly grabbed by fluted discs, then the belly dissecting tool or the back dissecting tool can be selected through a tool rest for killing the finless eels or the loaches from the backs or the bellies, the equipment has the advantages of being high in killing speed and high in yield, the problems that existing killing devices are relatively complex in structure, low in work efficiency and poor in adaptability are solved, and the equipment is particularly applicable to killing and processing of the finless eels or the loaches.

The invention discloses a finless eel killing tool, and aims at providing the finless eel killing tool with the advantages that the operation is convenient and fast, the operation safety is high, the cost is low, and the finless eel killing tool is suitable for being applied to small-quantity finless eel killing in places such as families, dining halls and restaurants. The finless eel killing tool comprises a finless eel automatic wire mounting device and a finless eel belly opening device, wherein the finless eel automatic wire mounting device comprises a storage box, a vertical insertion plate and a plurality of wire mounters, the vertical insertion plate is arranged in the storage box, and the wire mounters are arranged on the vertical insertion plate. Each wire mounter respectively comprises an induction sleeve, a release insertion pin, a traction wire, a trigger rod, an elastic steel bar and a bait bag, the induction sleeve, the release insertion pin, the traction wire, the trigger rod and the elastic steel bar are arranged on the vertical insertion plate, and the bait bag is arranged in the induction sleeve. The finless eel belly opening device comprises a finless eel installing and clamping table and a cutting device, and the finless eel installing and clamping table comprises a support frame and a plurality of shaping elastic sleeves arranged on the top of the support frame side by side. Cutter avoiding notches are respectively formed in the top of each shaping elastic sleeve, and in addition, the cutter avoiding notches extend in the axial directions of the shaping elastic sleeves and penetrate through the two ends of the shaping elastic sleeves.

The invention discloses an application of black soldier fly larvae to a feed for improving meat quality of aquatic products. Black soldier fly larva powder is added to a feed for aquatic products, andthe black soldier fly larva powder is rich in various nutrient components and functional components, so that the intestine environment of the aquatic animals can be improved, the absorption of the nutrient components in the feed by the aquatic animals can be strengthened, meat quality texture indexes of the muscle elasticity, the adhesiveness, the chewiness, the hardness, the adhesiveness, the cohesion, the recoverability and the like, of the aquatic animals of finless eels, pelteobagrus fulvidraco, japanese sea perches and the like are notably improved, and the application has favorable application prospect and market value.

The invention relates to a crop and aquaculture intercropping technology, in particular to an intensified finless eel breeding and rice planting intercropping technology. The intensified finless eel breeding and rice planting intercropping technology mainly comprises the steps of rice field modification, rice planting, seedling putting, preparation of auxiliary materials, bait feeding, field management and fishing. The intensified finless eel breeding and rice planting intercropping technology has the advantages that the breeding method is simple, and finless eels and rice are intercropped, so that the intensified finless eel breeding and rice planting intercropping technology is ecological, environmentally friendly and suitable for family breeding; the finless eels are nutritious, have a certain drug effect and are high in protein content, low in fat and good in taste and medical value.

The invention discloses a combined tool for processing sea eel or finless eel. The invention aims to provide a combined tool which is convenient and quick in operation, low in cost and fit for killing a small amount of sea eel or finless eel in the places, such as home, restaurants and hotels. The combined tool comprises a sea eel or finless eel automatic loading device, a shaping elastic sleeve and a cutter, wherein the sea eel or finless eel automatic loading device comprises a storage box with an opening at the upper end and a plurality of vertical insert plates which are arranged in the storage box and can be taken out of the storage box; a plurality of loaders are respectively arranged on the vertical insert plates; mesh enclosures are respectively arranged on one side of each of the vertical insert plates; the loaders on the same vertical insert plate are all located in the corresponding mesh enclosures; each of the loaders comprises an inducing sleeve, a pin, a dragging line, a trigger rod, a spring steel sheet and a bait bag; the spring steel sheet is arranged right under the inducing sleeve; the bait bag is arranged in the inducing sleeve; one end of the inducing sleeve is fixed on a side wall of each of the vertical insert plates; penetrating through holes are respectively arranged on the side walls of the vertical insert plates corresponding to the inducing sleeve.

The invention relates to a device for temporarily culturing caught finless eel in circulating water. The device is characterized by comprising a box, wherein the inside of the box is layered vertically to form a plurality of culture chambers, upper ends of the culture chambers are opened, and bottom surfaces of the culture chambers are perforated plates or grid plates; a water purification treatment system is arranged at the bottom of the box and comprises at least three overflow purification areas; a guide plate (6) is arranged below the bottommost culture chamber and introduces water flow into the first overflow purification area, and a biological filter material is arranged in the first overflow purification area; and a cooler (7) is further arranged in one overflow purification area, a water pump (1) is further arranged in the last overflow purification area and communicated with a water pipe (2), the water pipe (2) is then communicated with branched water pipes (4), and the branched water pipes (4) extend above the culture chambers respectively and spray water mist on the culture chambers through a plurality of spray headers (5) on the branched water pipes (4).

The invention discloses a finless eel feed, which comprises the following components:10-25wt% of trash fish powder, 20-40wt% of colza cake powder, 15-25wt% of peanut powder, 5-8wt% of soybean powder, 10-20wt% of corn protein powder, 5-9wt% of fresh freshwater shrimp powder, 1-2wt% of animal protein powder, 0.3-0.5wt% of inorganic salt, 1-2wt% of a hunger-accelerating agent, 0.1wt%-0.5wt% of adhesive, and 0.1wt%-0.5wt% of vitamin mixture. The raw materials are poured into a container in a proportion and mixed uniformly, the mixture is heated by a ring mould hard granulator to be produced into hard granulated feed sediment, then the hard granulated feed is sieved by a 60-mesh sieve, and the weight of each feed granule is 0.2g.

The invention belongs to the field of aquaculture, and particularly relates to a fodder for breeding finless eels. The fodder comprises the following components in percentage by weight: 10-20 percent of bean pulp, 15-28 percent of goat blood powder, 10-25 percent of pork liver powder, 15-25 percent of fish powder, 5-10 percent of oat powder, 1-5 percent of earthworm powder, 5-10 percent of carrot powder, 0.1-0.5 percent of vitamin C, 0.02-0.08 percent of decavitamin, 0.5-0.8 percent of a finless eel phagostimulant and 0.1-0.5 percent of mineral substances. The fodder provided by the invention can be used for improving the balance of the nutrients; due to the use of a plurality of other added components, the finless eels can have enough vitamins and mineral substances; meanwhile, the fodder is added with the finless eel phagostimulant, so the attractive force of the fodder for the finless eels is increased, the utilization rate of the fodder is increased, and the growth rate of the finless eels is increased.

The invention discloses a stage culture method of a finless eel. A cement pit culture method is used at a first year and a cage culture method is used at a second year within two years for culturing a young finless eel into an adult finless eel; a cement pit is used for culturing at the first year so as to observe the feeding and action conditions of the finless eel conveniently, the finless eel is better domesticated, various conditions of the finless eel are clearer, the finless eel is more conveniently displaced into and out of the cement pit; the cement pit culture has high cost, the finless eel is displaced into a cage at the second year so that the cost is greatly reduced, and because the culture water surface of the cage is large, water is deep, freshness and oxygen dissolution are good, water circulation does not need to be carried out every day like the cement pit, and only water is regularly supplemented; and finless eel seedlings are successfully domesticated and then can adapt and eat at once when moved into the cage. According to the stage culture method disclosed by the invention, a growth period is prolonged, and a high weight increment proportion is achieved.

The invention relates to a finless eel self-reproducing, self-breeding and self-cultivating mode. The mode comprises a first step of finless eel simulated ecological breeding and cultivating by means of net cages, and a second step of commercial finless eel breeding. The first step comprises six processes of parent finless eel cultivation and selection; breeding net cage arrangement; parent finless eel throwing; parent finless eel feeding and management; fry cultivating net cage arrangement; and fry collecting, cultivating and binning for overwintering. The second step comprises four processes of first-instar finless eel throwing at right time according to required density; breeding net cage arrangement; finless eel feeding and management; and parent finless eel preparation. According to the invention, all the processes are self-sufficient as fries are bred by people, so that a phenomenon that the fries which are bought from the market with high price have different qualities is avoided; the fries can be thrown in advance, so that the cultivation period is prolonged, and the finless eel can be cultivated from May to October; and furthermore, feeding habitat conversion is not required for artificial fries, so that stress responses caused by feeding training and environment changing are avoided, and the stocking success rate is improved.

The invention discloses a finless eel rice field integral planting and breeding method capable of stabilizing the grain income and increasing the fishery income. The method includes the steps: selecting a rice field, where a land having the pH of 4-7 is used as the rice filed; constructing the rice field, increasing the height and the width of ridges of the rice field, reinforcing the ridges, and additionally arranging escape-proof facilities in a drainage opening; flatting the rice field, and digging drainage ditches; turning over the rice field, drying the rice field in sunlight, smashing soil, and then applying a base fertilizer; applying fermentative chicken manure to the drainage ditches and injecting water from the last ten days of March to the first ten days of April; planting the rice; selecting finless eel fries; stocking the finless eel, disinfecting the selected finless eel fries, and then putting the selected finless eel fries into the rice field; feeding the finless eel with fodder, feeding the finless eel with the fodder once every day during 1-2 weeks after finless eel stocking, wherein the feeding amount of the fodder is 4-8 wt% of the body weight of the finless eel; and then feeding the finless eel with the fodder for 3 times every day, wherein the feeding amount of the fodder is 2-5 wt% of the body weight of the finless eel; managing the water quality, changing water once every 2-3 days in midsummer, and changing water once every 7-10 days in the rest time, wherein the water changing amount is 1 / 3 of water in the rice field; and controlling diseases.

The invention relates to a composite micro-ecological water quality regulator and a preparation method thereof. The regulator is prepared from, by weight, 1-1.2% of vitamin A, 1-1.2% of vitamin B2, 0.5-0.8% of vitamin B6, 10-15% of vitamin C, 4-8% of taurine and 73.8-83.5% of glucose. In the regulator, the content concentration of mixed bacteria is 107-109 CFU / g. During preparation, firstly, EM, bacillus licheniformis and bifidobacterium are prepared into a fermentation seed solution, then fermentation liquor is prepared, and lastly the mixed fermentation liquor, vitamin A, vitamin B2, vitamin B6, vitamin C, taurine and glucose are subjected to mixing granulation, and the regulator is prepared. The preparation method is simple, the steps are easy to operate, the prepared regulator is suitable for aquaculture of all marine and freshwater varieties such as finless eels, loaches, fishes, shrimps, crabs and sea cucumbers, aquaculture water can be restored quickly, the physique and anti-stress ability of bred animals are enhanced, the survival rate of fry is increased, digestion is promoted, absorption is guaranteed, the yield of the bred animals is raised, and the quality of the bred animals is improved.

The invention discloses a method for breeding finless eel by nano feeds. The method comprises the following steps: selecting a pond which is in east and west directions, has a length-to-width ratio of 3 to 2, an area of 2000-10000m<2>, a pond ridge height of 1.8-2.0m and a stable water level of 1.4-1.5m, and is provided with perfect water drainage facilities as a breeding pond; disinfecting the pond in 10-15 days before finless eel fries are put into the pond, draining off water in the pond, checking whether holes are formed, cleaning the pond by unslaked lime, and feeding the finless eel fries with multifunctional microorganism feeds. Through comparison, and by adding a compound microorganism fertilizer, the finless eel can be promoted to grow quickly, the EPA (eicosapentaenoic acid) content can be increased, the finless eel diseases are reduced, the fatality rate is reduced, meanwhile beneficial microorganisms in a water body are added, and the final quality is improved.

The invention relates to a finless eel net cage ecological breeding method. The finless eel net cage ecological breeding method comprises the steps of adopting a net cage low-density sparse breeding aquaculture technology to create a finless eel symbiotic ecological environment, selecting bred high-grade parental finless eels, performing intensive cultivation, enabling the finless eels to naturally perform spawning, fertilization, hatch and birth in a net cage, then taking away the parental finless eels, artificially feeding young finless eels and finally breeding finless eels. The method utilizes the net cage to breed finless eel fry, operation is easy, bred finless eel fry is easy to catch, the working amount is small, the production cost is low, the water quality is easy to manage, the problem that the finless eel fry is difficult to catch is solved, and industrial large-scale production of the finless eel fry is facilitated. In addition, the method does not adopt artificial spawning, meets the requirement for gonad development through advanced breeding of the parental finless eels and achieves natural spawning and fertilization, the bred fry is good in constitution and quick in growing speed, and the survival rate of the finless eel fry is improved.