305 results about "Fish egg" patented technology

The invention provides a method for calculating migratory parent fish quantity by using fish early-stage resource quantity, which comprises the following steps: collecting early-stage resource quantity data, migratory parent fish quantity data and various parameters, and processing the collected data to obtain a comprehensive data set; constructing a basic model for representing the relationship among the number of roes, the number of larva fishes and the number of migratory parent fishes in combination with various parameters; designing a model architecture of the basic model by using a long-short-term memory network to obtain an initial prediction model, and quantifying the initial prediction model by using a Bayesian method to obtain a calculation prediction model; in combination with an MCMC method, performing parameter estimation and model training on the reckoning prediction model to realize optimization of the reckoning prediction model; and calculating the number of migratory parent fishes by using the optimized calculation and prediction model. According to the method, multiple data sources can be combined, the ecological environment complexity, the time sequence dynamics and the prediction uncertainty are fully considered, and accurate calculation of the migratory parent fish quantity is achieved.

The present invention discloses an intelligent mobile artificial fish nest experimental platform for fish with sticky and sinking eggs, including an artificial fish nest bed and an intelligent mobile base, wherein the artificial fish nest bed is a field-shaped structure, buoyancy cylinders are loaded on four sides, an experimental observation camera is arranged in the middle, a group of Mecanum wheels are respectively installed at four corners of the intelligent mobile base, and an omnidirectional mobile motor, a stable support motor, an intelligent control console, a magnetic plate, an underwater camera system and a telescopic hinge are loaded on the intelligent mobile base. The present invention makes up for the lack of protection measures for fish with sticky and sinking eggs at present, provides a suitable spawning place for fish with sticky and sinking eggs, weakens the influence of underwater terrain changes caused by changes in river and lake water levels and dam flood discharge on the growth and development of sticky and sinking fish eggs, optimizes the protective effect of artificial fish nests on sticky and sinking fish eggs, and provides more technical basis for the protection of spawning grounds of fish with sticky and sinking eggs.

The invention relates to the technical field of fish breeding, and discloses a brachymystax lenok roe hatching device which comprises a hatching basket slidably connected into a hatching pond, water permeable holes are formed in the bottom and the periphery of the hatching basket, and the hatching device further comprises a water flow disturbance mechanism, a lifting mechanism, a high-pressure water flow impact assembly and an isolation assembly. The water flow disturbance mechanism comprises a rotary driving assembly, a rotating shaft and a spiral blade, the rotating shaft is driven by the rotary driving assembly to drive the spiral blade to rotate so as to disturb water flow on the peripheral side of the hatching basket, and roes and dead roes in the hatching basket are dispersed; the lifting mechanism is connected with the hatching basket and used for driving the hatching basket to lift; the high-pressure water flow impact assembly is arranged on one side in the hatching pond, and the isolation assembly is arranged on the opposite side of the high-pressure water flow impact assembly and used for isolating dead eggs impacted by the high-pressure water flow impact assembly. The device can automatically clean dead roes and impurities, is not interfered by factors of a dark environment, and does not interfere with the normal hatching process of the roes.

The utility model discloses a demersal roe hatching device, which relates to the technical field of roe hatching and comprises a hatching container, a hatching sieve bed, a weeping pipe and an overflow pipe, the overflow pipe and the hatching sieve bed are arranged in the hatching container, the top of the hatching container is open, the weeping pipe is arranged above the hatching container and communicated with a water inlet pipe, and a sieve is laid in the hatching sieve bed. Meshes of the screen mesh are smaller than the diameter of the fertilized eggs, so that the fertilized eggs can be flatly laid on the screen mesh before incubation, and the incubation screen bed is at least 10cm lower than an overflow port of the overflow pipe. The fertilized eggs can be flatly laid on the screen in the hatching screen bed in the middle layer of the water body, it is guaranteed that each fertilized egg can obtain sufficient dissolved oxygen supply of the water body, the development requirement is met, hatched fries can fall into the bottom of the hatching container from the screen in time, and the hatching efficiency is improved. Dead eggs and egg shells can be effectively prevented from being infected with water mildew to harm development of other normal fertilized eggs, the work intensity of manually picking up the dead eggs in a traditional hatching mode is reduced, and the hatching rate of the fertilized eggs and the survival rate of juvenile fishes are increased.

The present invention belongs to the ecological field and provides a reservoir ecological regulation method that meets the requirements of fish spawning occurrence and fish egg density, including: obtaining the natural reproduction characteristic information and habitat information of fish species that produce drifting eggs in the regulated target river section, and determining the regulated target fish species; obtaining the first key habitat information required when the spawning occurrence probability of all fish species that produce drifting eggs and the regulated target fish species is not less than a first preset threshold; obtaining the second key habitat information required when the fish egg density of all fish species that produce drifting eggs and the regulated target fish species is not less than a second preset threshold; determining a reservoir ecological regulation plan according to the first key habitat information and the second key habitat information of the river section; and carrying out reservoir ecological regulation according to the reservoir ecological regulation plan. Through the above technical solution, the adverse impact of reservoir regulation operation on the spawning of fish species that produce drifting eggs can be alleviated, which is beneficial to promoting the restoration of fish resources and the protection of biodiversity.

The artificial fish nest comprises a base and incubation plates which are arranged on the base and used for spawning, two side plates are installed on the base, a plurality of supporting pipes which are arranged from top to bottom are fixedly installed between the two side plates, the incubation plates are symmetrically arranged relative to the supporting pipes, and the incubation plates are fixedly installed on the base. The incubation device comprises an incubation plate, the edge of the incubation plate is connected with a sleeve, the sleeve is rotationally arranged on a supporting pipe in a sleeving mode, penetrating grooves are further formed in the position, overlapped with the sleeve, of the supporting pipe in an annular array mode, meshing teeth are slidably arranged in the penetrating grooves, and inner tooth grooves matched with the meshing teeth are formed in the inner wall of the sleeve. When the meshing teeth are meshed with the inner tooth grooves in the inner walls of the sleeves, the sleeves and the hatching plates can be limited, stability of the hatching plates is kept, and when the meshing teeth retract into the penetrating grooves, limitation can be released, the angles of the hatching plates can be conveniently adjusted, and water flow among the hatching plates can be conveniently kept smooth.

The invention relates to the technical field of roe breeding, in particular to a salmon roe breeding and hatching integrated device and method.The device comprises a hatching pond, and a partition plate is arranged in the center of the hatching pond and divides the hatching pond into a hatching cavity and a breeding cavity; an overflow pipe capable of sliding is arranged on the partition plate; a filter assembly is arranged in the breeding cavity and comprises a mounting frame and a filter screen; through linkage of the overflow pipe and the filter screen, automatic regulation and control of water quality purification and fry protection in the salmon egg hatching process are achieved. The self-adaptive angle adjustment of the filter screen along with lifting of the overflow pipe is matched with the clearance channel, efficient separation of fry and impurities is achieved, the survival rate of the fry is guaranteed, the hatching environment is kept clean through concentrated fishing of the impurities, hatching conditions simulating the natural water flow period are provided for salmon demersal eggs, egg adhesion is reduced, the hatching efficiency is improved, and the survival rate of the salmon is increased. And the excellent breeding target of the salmon fries is achieved.

The utility model relates to the technical field of roe hatching, in particular to a roe hatching device for aquarium fish culture, which comprises a water tank, a mounting component and an alarm component, the mounting component comprises a hatching frame, a water quality detector, a temperature detector, a water oxygen detector, a heater, a connecting box, a controller, a purification component and an oxygenation component, roes are placed in the hatching frame to be hatched, the water temperature is detected through the temperature detector during hatching, when the water temperature is lower than the hatching temperature, the controller controls the heater to be started, the heater heats water, the water in the water tank is made to be at the constant hatching temperature all the time, and the water quality is detected through the water quality detector; the water oxygen detector detects the oxygen content of water, the water in the water tank is purified and filtered through the purification component, the water in the water tank is oxygenated through the oxygenation component, the oxygen content is increased, and when detected data are abnormal, the controller controls the alarm assembly to give an alarm, so that workers go to check in time.

The utility model relates to the technical field of cold water fish egg squeezing, and discloses a cold water fish egg squeezing device which comprises a box body, a special-shaped round hole is formed in the front end of the box body, an annular groove is formed in the front end of the box body, a through hole is formed in the rear side of the box body, and a slide slope is formed in the rear end of the box body. A driving assembly is fixedly connected to the interior of the top end of the box body, a first gear is fixedly connected to the driving end of the driving assembly, a containing plate is fixedly connected to the top end of the interior of the box body, a second gear is rotationally connected to the right side of the front end of the containing plate, and special-shaped connecting rods are fixedly connected to the front ends of the first gear and the second gear. The bottom end of the containing plate is fixedly connected with a carrying plate. According to the trout egg squeezing device, trout can be automatically clamped, the requirement for human resources can be reduced, it means that in the egg squeezing process, workers can concentrate on other important tasks, and the overall production efficiency is improved.

The utility model belongs to the technical field of fish culture, and particularly relates to an acrossocheilus fasciatus roe collecting and hatching integrated device. Comprising a water storage frame used for providing a water environment, an egg collecting frame used for collecting fish eggs and an egg laying frame used for parent egg laying, frame bodies of the egg laying frame, the egg collecting frame and the water storage frame are gradually enlarged, and the egg laying frame, the egg collecting frame and the water storage frame are sequentially nested and erected from top to bottom, so that the frame bodies form three layers of nested structures from inside to outside; an ovipositor is arranged in the oviposition frame and is provided with a gravel-imitating rough surface, the bottom of the oviposition frame is provided with a first hole allowing roes to pass through, and the bottom of the roe collecting frame is provided with a second hole allowing water to pass through. The device is simple in structure and convenient to use, parent fish and fertilized eggs can be conveniently separated, after the fertilized eggs are hatched, fish fries can be conveniently transferred, the hatching rate is increased, and the survival amount of offspring is increased.

The invention belongs to the technical field of aquaculture, and particularly relates to a pearl grouper fry rearing method. According to the method, firstly, after the roes are hatched, the fries are soaked with a bactericide, harmful bacteria on the surfaces of the roes and in a hatching pond can be effectively killed, and a bacteria solution of lactobacillus brevis serves as the bactericide, so that the use of antibiotics is reduced while the growth of pathogenic bacteria is inhibited; the culture pond is divided into 1m * 1m spaces by the partition plates, so that the phenomenon that the fries kill each other or snatch for food due to insufficient spaces is avoided, and uniform growth of the fries is facilitated; culture is carried out in stages according to nutritional requirements of different growth stages, and the Weissella microbial inoculum and the lactococcus lactis microbial inoculum are added to the feed in each stage, so that the intestinal microecological balance of the fry is adjusted, the growth and reproduction of harmful bacteria are inhibited, the intestinal digestion and absorption functions of the fry are enhanced, and the utilization rate of the feed is increased.

The invention belongs to the field of ecology, and provides a reservoir ecological scheduling method capable of meeting fish spawning occurrence and roe density requirements, which comprises the following steps: acquiring natural reproduction characteristic information and habitat information of fishes laying drifting roes in a scheduling target river reach, and determining the scheduling target fishes; acquiring first key habitat information required when the spawning occurrence probability of all the fishes laying the drifting eggs and the scheduling target fishes is not less than a first preset threshold value; acquiring second key habitat information required when the roe density of all the fishes laying the drifting roes and the scheduling target type of roes is not less than a second preset threshold value; according to the river reach first key habitat information and the river reach second key habitat information, determining a reservoir ecological scheduling scheme; and performing reservoir ecological scheduling according to the reservoir ecological scheduling scheme. By means of the technical scheme, the adverse effect of reservoir dispatching operation on spawning of the fishes laying the drifting eggs can be relieved, and fish resource recovery and biodiversity protection are facilitated.

The utility model discloses an artificial breeding device for light red ink head fish, which belongs to the technical field of aquatic product hatching and fry breeding and comprises a spawning induction pond, a hatching pond and a fry collecting pond. Cobblestones are laid at the bottom of the spawning induction pond, a spraying mechanism is fixedly connected to the top of the spawning induction pond, an ovulation pipe is communicated with the center of the spawning induction pond, the top of the ovulation pipe is lower than the top face of the spawning induction pond, and the bottom end of the ovulation pipe penetrates through the spawning induction pond to be communicated with the hatching pond; a filtering mechanism is detachably connected to the middle of the hatching pond, an overflow pipe is arranged in the filtering mechanism, and the bottom of the overflow pipe penetrates through the hatching pond to communicate with the outside; the side wall of the bottom of the hatching pond is communicated with a seedling outlet pipe, and the seedling outlet pipe is fixedly connected with a control valve and communicated with the seedling collecting pond. The device can effectively simulate the natural breeding environment of the light red ink head fish, accurately control various key parameters in the breeding process, and improve the reproductive performance of parent fish, the hatching rate of fish eggs and the survival rate of fish fries.

The utility model discloses an incubation fish tank with a filtering function, which comprises a tank body, a fish culture area and an incubation area are arranged in the tank body, a separating partition plate is arranged in the incubation area to divide the incubation area into a female fish area and a roe area which are distributed up and down, and a plurality of through holes for roes to pass through are arranged on the separating partition plate. The female fish area and the roe area are communicated with the fish culture area, isolation plates for blocking the female fish area, the fish culture area, the roe area and the fish culture area are detachably arranged in the tank body, after female fishes in the female fish area lay eggs, roes enter the roe area through the through holes to be hatched into juvenile fishes, the isolation plates are taken out after the juvenile fishes reach the length, and the female fishes and the juvenile fishes enter the fish culture area through the channels. Compared with the prior art, the fish hatching device has the advantages that after fish eggs are hatched into small fishes, the small fishes and adult fishes do not need to be separated specially, female fishes and juvenile fishes in the hatching area can enter the fish culture area only by pulling out the isolation plate after the small fishes grow up, and operation is easy and convenient.

The invention discloses a static water pushing fish egg hatching device which comprises a hatching tank, a hatching net cage and a driving mechanism. Water is contained in the hatching tank; the hatching net cage is arranged in water in the hatching tank, and the inside of the hatching net cage is used for accommodating roes; and the driving mechanism is used for driving the hatching net cage to reciprocate in the hatching tank. In the roe hatching process, roes are placed in the hatching net cage, the hatching net cage is placed in water in the hatching tank, the hatching net cage is driven to move back and forth in the water, the effect of static water pushing and water flow simulation is achieved, the roes are embraced by a mother body, damage to the roes is small, the oxygenation effect is good, a proper environment is achieved, and the breeding efficiency is improved. Therefore, the hatching rate of roes can be improved.

The invention discloses a device for collecting roes of reef fishes, and belongs to the technical field of fish breeding, the device comprises a collector, the main body of the collector is of a cylindrical structure, one end of the collector is open and provided with a guide pipe, the guide pipe is externally connected with a filter assembly, the other end of the collector is provided with a cover plate, the outer side is provided with a propeller thruster, and the inner side is provided with a baffle; a water pump is installed on the baffle and connected with one end of a water pumping pipe, the other end of the water pumping pipe is connected to the outside of the collector, a cylinder is arranged in the collector, and the water pump is separated from the cylinder through an obliquely-arranged filter screen; the gravity center of the ship-shaped floater is at the bottom, a buoy is fixedly connected to the lower portion of the ship-shaped floater, and the floater is connected with the top of the collector through a telescopic pipe. The roe collecting device is suitable for collecting roes of reef fishes, consumed manpower and material resources are few, roe damage is small, long-time continuous roe collecting can be achieved, and the roe collecting efficiency is improved.

The utility model discloses a micro-injection roe fixing mold, which relates to the technical field of biological experiment molds and comprises a bottom plate. The plurality of comb-shaped toothed bars are symmetrically and fixedly arranged on the upper wall of the bottom plate; and the identification mark is fixedly arranged on the bottom plate. The utility model is suitable for preparing the roe fixing tool by using the agarose gel. Due to the fact that the formed groove is of an inclined triangular conical structure, the resultant force of the acting force (Fa, Fb and Fc) of the three faces a, b and c and the gravity G on the fertilized eggs is zero, a certain angle is formed between an injection needle and the eggs during micro-injection, and the resultant force borne by the fertilized eggs cannot be changed by the force (Fi) of the injection needle. Besides, the friction force is greatly increased through the three stress surfaces, Fa, Fb and Fc are increased along with increase of injection force Fi, fertilized eggs cannot move and are not prone to slipping during micro-injection, and the device is particularly suitable for fish eggs which are high in hardness, high in elasticity and difficult to inject. And the device is suitable for roes with different sizes.

The invention provides a method for on-site rapid artificial insemination of wild sal-family large yellow croakers, and belongs to the technical field of aquatic animal breeding. According to the method, wild parent fishes are captured in the breeding season of the sal-family pseudosciaena crocea; selecting sexually mature male parent fishes on a capturing site, and collecting seminal fluid for later use; after manual semen collection is finished, female parent fishes with sexual maturity are selected, and fish eggs are collected; performing artificial insemination to obtain high-quality fertilized eggs; the artificial insemination comprises the following steps: adding seminal fluid into the roes, then adding natural seawater, stirring, and finally washing with the natural seawater. According to the method, key links of the whole artificial insemination process are comprehensively regulated and controlled, so that the purposes of obtaining high-quality fertilized eggs and carrying out artificial fry breeding by utilizing the parent fish of the wild sal ammoniac large yellow croaker are achieved.

A comprehensive system for hatching drifting fish eggs includes a culture tank, a flow control system, a roundabout real-time monitoring system, a stepped egg transfer system, an egg release system, an egg collection system, a tailwater collection platform, and a water storage tank. This system eliminates the influence of previous single-factor conditions on hatching, achieving the adjustability of influencing factors under different hatching environments, real-time tracking of the entire egg hatching process, and simulation of natural water flow conditions. During the hatching process, the system replaces the cumbersome operation of multiple manual egg releases in previous patents with a single, fully automated egg release process, thereby improving the egg hatching rate. Furthermore, to identify the drifting path patterns of the eggs during hatching, side-view and top-view egg drift monitoring systems and a hydraulic characteristics testing system are provided. The hatching drift distance of the eggs, as calculated by the monitoring system, can provide a reference for the fish species richness of the river's main stream and tributaries.

The invention relates to the technical field of gobio gobio artificial propagation, in particular to a gobio gobio artificial propagation method and device, and the device comprises supporting legs, a box body, a partition plate, a top cover, a cover plate, a handle, an auxiliary assembly and a moving assembly; a box body is fixedly installed on the multiple supporting legs, a partition plate is fixedly installed in the middle of the box body and divides the box body into a first cavity and a second cavity, two top covers are fixedly installed at the top of the box body and located on the two sides of the partition plate respectively, a cover plate is hinged to any top cover, and the cover plate is hinged to the bottom of the box body. A handle is fixedly installed on the cover plate, an auxiliary assembly is fixedly installed on one side of the long edge face of the box body, and a moving assembly is fixedly installed on one side of the short edge face of the box body. According to the gobio gobio spawn transfer device, irreversible damage caused in the transfer process of spawns during artificial propagation of gobio gobio is avoided, meanwhile, manual transfer is not needed, the transfer time is saved, the labor intensity is reduced, and the transfer efficiency is greatly improved.

The utility model provides a fry hatching device, which relates to the technical field of fry hatching and comprises an adult fish box, a hatching box fixedly connected to the bottom of the adult fish box, a baffle fixedly mounted in the hatching box and a separation component arranged in the hatching box, and the separation component comprises a guide funnel, a hatching frame, a connecting column and a supporting block; the cleaning assembly is arranged at the bottom of the baffle and comprises a collecting tank, a collecting pipe, a circulating pump, a backflow pipe and a triangular scraper. According to the fish fry hatching device, the separation assembly can make freshwater fish roe balls adhere to the hatching frame, fish food residues are not sticky and can fall to the position above the baffle, it is ensured that the fish food residues of adult fishes cannot be mixed with the fish roe balls, through arrangement of the cleaning assembly, the fallen fish food residues and the like are scraped into the collecting groove, and the fish roe balls are prevented from being damaged. And then residues are sucked out along with water flow through the circulating pump, so that the interior of the incubator is cleaned, the incubation water quality is improved, and fry are not affected by the water quality and are incubated smoothly.

The invention discloses a semi-floating type artificial fish nest moving device for ecological restoration of a river channel in the technical field of artificial fish nests. The semi-floating type artificial fish nest moving device comprises a square floating frame composed of hollow cylinders and a first air bag arranged in the floating frame. In the process of placing the artificial fish nest in the river channel, the cluster beards and the protective cylinder are utilized, when the artificial fish nest is used, the cluster beards are unfolded to the lower portion of the protective cylinder, the outer sides of the cluster beards are not shielded, and fishes can swim to the cluster beards from the periphery and lay eggs on the surfaces of the flexible matrixes of the cluster beards; the situation that the fish gathers to grab the spawning position is avoided; when the water flow speed of the river channel exceeds a threshold value, a pulling rope is wound by utilizing a detection fan blade, a rotating shaft and a rotating rod, so that the tuberous rootlets are pulled upwards into a protection barrel, the protection barrel can block the impact of water flow, and fish eggs attached to the surface of a flexible matrix on the tuberous rootlets are protected; and the cluster beards can move into the protection barrel for automatic protection when the river flow is accelerated.

The invention provides a semi-automatic zero-water-change internal circulation incubation system, and relates to the technical field of data processing, and the semi-automatic zero-water-change internal circulation incubation system is characterized in that bottom accumulated dirt is sucked and verified by using a gap structure of a backflow sleeve and a limiting backflow pipe, the gap size and the height of the backflow pipe are optimized, and water flow dynamic parameters are obtained; the biofilter is used for biologically filtering and decomposing the water body of the spray culture pond and optimizing the opening parameters of the filter bag pipe according to the water flow dynamic parameters; monitoring a water body in real time through a biological filtration load dynamic adjustment method, and dynamically adjusting the operation power of a water pump to obtain a purified water body; the method is used for dynamically distributing the flow ratio of purified water to the roe incubator to return water to the spray cultivation pool on the basis of purified water and through a circulating water flow distribution intelligent regulation and control method based on the fry breeding density and the growth stage, and zero-water-change internal circulation is achieved. The fish roe turning incubation effect and the stability of the water fry cultivation process are effectively guaranteed.

The utility model provides a monitoring device for efficient incubation of red scale roes, which relates to the technical field of roe incubation and comprises a bottom plate, a roe incubation box fixedly mounted at the top of the bottom plate, a cold water tank fixedly mounted at the top of the bottom plate, a first water cover fixedly mounted at the top of the cold water tank, and a condensate pipe fixedly inserted at the top of the first water cover. According to the fish egg incubator, under the action of the first temperature sensor, when the water temperature in the fish egg incubator is lower than a set value, the two heaters are started through the controller to heat the water, and then when the temperature is higher than the set value, the water pump is started through the controller to heat the water; the water in the cold water tank is absorbed by the condensate water pipe, passes through the inside of the roe incubator along the condensate water pipe and then returns to the recycling box, so that the cooling effect is achieved until the temperature is controlled to be the temperature suitable for efficient incubation of red-scale roes, high-quality monitoring of the red-scale roe incubation temperature is achieved, and the incubation rate and the fry quality are improved.

The invention discloses a space aquatic airtight experiment system and method, and belongs to the technical field of space life sciences, the system comprises an experiment module box body, a drawer, a slide rail and a space aquatic airtight experiment device; the space aquatic airtight experiment device is arranged in the experiment module box body in a sliding opening manner through the drawer and the sliding rail; the spatial aquatic closed experiment device comprises a fish chamber, an algae chamber, a feeding motor, a fish food injector, a roe collecting box and a circulating pump, and is characterized in that a spatial aquatic life support system (plant-fish-microorganism) of fish is constructed, and the content of dissolved oxygen in the fish culture chamber is monitored; the on-off of the simulated natural light source in the algae culture chamber is controlled to control the oxygen yield of the photosynthesis of algae, and finally the gas balance in the aquatic closed culture chamber is realized.

The utility model relates to a marine fish large-scale fry breeding incubation net cage, which comprises at least one incubation net cage, each incubation net cage comprises an outer cage body, an isolation flexible film is arranged at the position 1 / 3 away from the bottom in the outer cage body, a net bag is arranged in the outer cage body above the isolation flexible film, a through rotating main shaft is arranged in the outer cage body below the isolation flexible film, and the rotating main shaft is connected with the isolation flexible film. Fan blades are fixed on the rotating main shaft at intervals, the fan blades are oval, the rotating main shaft is located at the non-midpoint position of the long axis of the fan blades, and every two adjacent fan blades are symmetrically distributed with the rotating main shaft as the axis; one end of the rotating main shaft is connected with a transmission assembly; and the other end of the rotating main shaft extends into the adjacent hatching net cage. The fan blades which rotate along with the rotating main shaft to alternately jack up different positions of the bottom of the net bag are arranged at the bottom of the hatching net cage, so that roes deposited at the bottom of the net bag are turned over, oxygen deficit of the roes is avoided, the number of the roes placed in a single net cage can be properly increased, and the hatching scale is increased.

The invention discloses a fish egg hatching rate prediction optimization method based on deep learning, and belongs to the technical field of deep learning. Hatching environment parameters such as water temperature, dissolved oxygen and illumination intensity and roe physiological state parameters are collected, and a unified feature identifier is established; by introducing environment disturbance parameters such as temperature fluctuation, dissolved oxygen change and pollutant concentration and combining with a hatching rate index for correction, a dynamic response diagram under a real working condition is generated, and the robustness of a prediction model in a complex environment is improved; by constructing a multi-modal prediction strategy and a priority weighted multi-factor collaborative prediction mechanism, efficient collaboration and conflict arbitration among environmental factors are realized; and a real-time evaluation signal is generated in combination with sensor feedback, and the deep learning network is continuously updated, so that online optimization and adaptive adjustment of the prediction model are realized. The method can effectively improve the prediction precision of the roe hatching rate, improves the stability, energy efficiency and success rate of the hatching process, and has good agricultural applicability and expansibility.

The invention relates to odorless lyophilized fish roe powder with high nutritional value that can be used in baby supplement foods (baby food, baby biscuits, baby noodles, baby soups, etc.) and as functional food from edible eggs of marine, freshwater and shellfish products and its preparation method.

The artificial incubation device comprises a backflow purification tank, an incubation tank and a plurality of incubation containers, the incubation containers are clamped in the incubation tank, each incubation container is in a hollow bullet shape, a filter opening is formed in one side of the top of each incubation container, a screening net is installed on each filter opening, and the other side of each incubation container is provided with a filter screen. The backflow purification tank is arranged on one side of the incubation tank, a water pump is installed at the bottom in the backflow purification tank, an outlet pipe of the water pump is connected with a plurality of branch pipes, and the branch pipes are inserted into the incubation containers and correspond to the incubation containers in a one-to-one mode. The artificial hatching device for the cheilocheilus undulatus is used for hatching and culturing fertilized eggs of the cheilocheilus undulatus into larvae, and the larvae cannot sink to the bottom in the hatching process, so that the larvae cannot die due to oxygen deficit; water flow inside and outside the container is exchanged through the screening net on the incubation container, then the exchanged impurities enter the purification tank from the overflow port and then flow back into the incubation tank through the water pump, a circulation is formed, the water body is kept fresh, and the incubation survival rate of the cheilocheilus undulatus after the cheilocheilus undulatus goes out of the membrane is improved.

The invention discloses nano medaka roe membrane micro villus and application thereof in fresh keeping of fish meat, and belongs to the technical field of fresh keeping of aquatic products. According to the method, the micro villi on the outer membranes of the medaka roes are separated and extracted from the medaka roes by adopting high-pressure micro-jet homogenization treatment, and meanwhile, the medaka roe membrane micro villi with the nano particle size are obtained by adopting a nozzle with the nano diameter; the obtained nano medaka roe membrane microvilli can provide a protective barrier for fresh fish meat, and the problems that due to the fact that the instant temperature difference is large and heat exchange is violent, the expansion pressure is too large, cells in the fish meat are broken, the tissue structure of the fish meat is damaged, and finally the quality of the fish meat is deteriorated are solved.