176 results about "Fish egg" patented technology

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 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 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 utility model discloses a multi-layer roe hatching device which comprises a frame body, a plurality of layers of separating frames and a plurality of layers of hatching devices. The incubation drawers are arranged on the partition frames on the corresponding layers in a sliding mode, water inlets and water outlets are formed in the incubation drawers, plugs are detachably connected to the water outlets, and water return openings are further formed in the incubation drawers; the hatching trays are arranged in the corresponding hatching drawers, and water outlet parts communicated with the hatching drawers are arranged on the bottom surfaces and the side walls of the hatching trays; the water flow circulating pipe fitting comprises a water outlet pipe fitting and a water return pipe fitting, the water outlet pipe fitting is connected with the water inlet, the water outlet pipe fitting is configured to simulate natural water flow to discharge water for roe incubation, the water return pipe fitting is connected with the water return port, and the water return pipe fitting is configured to recover water in the roe incubation process. The space occupied by the multi-layer roe hatching device is reduced, and the hatching efficiency is improved.

The present application relates to fish breeding technical field, propose a kind of fish egg hatching device and hatching method, including three-way pipe, oxygenation pipe, incubation pipe, adjusting piece and shaftless propeller, wherein, three-way pipe has first pipe mouth, second pipe mouth and third pipe mouth;Oxygenation pipe is connected with first pipe mouth and passes through, and the aeration end of oxygenation pipe corresponds third pipe mouth;Incubation pipe one end is connected with second pipe mouth and passes through;Adjusting piece is set in third pipe mouth;Shaftless propeller is set on the end of incubation pipe away from three-way pipe.This application can control the flux of third pipe mouth by adjusting piece, i.e. the oxygen content of water flow into incubation pipe through third pipe mouth can be controlled;At the same time, incubation pipe is used for water flow, by controlling the power of shaftless propeller, i.e. water flow can be controlled, so it is convenient to control the oxygen content of water flow and flow rate, when setting multiple devices for hatching, distinctive hatching cycle contrast can be obtained, which is beneficial to help hatching staff to accumulate relevant experience.

The application provides a method for on-site rapid artificial insemination of wild Pseudosciaena crocea of Lutjanidae, and belongs to the technical field of aquatic animal breeding. Wild parent fish of Pseudosciaena crocea of Lutjanidae are captured in the breeding season; sperm is collected from the selected sexually mature male parent fish on the capture site; after artificial sperm collection, sexually mature female parent fish are selected, and fish eggs are collected; high-quality fertilized eggs are obtained through artificial insemination; the artificial insemination comprises the following steps: adding sperm into fish eggs, adding natural seawater for stirring, and finally washing with natural seawater. Through comprehensive regulation of key links in the whole process of artificial insemination, the purpose of obtaining high-quality fertilized eggs by using wild parent fish of Pseudosciaena crocea of Lutjanidae and carrying out artificial fry breeding is achieved.

The utility model relates to the technical field of fish breeding equipment, and discloses a device for mating and egg taking of zebra fish, which is characterized by comprising a box body, a horizontal partition plate and a vertical partition plate are fixedly connected in the box body, the horizontal partition plate and the vertical partition plate divide the box body into a mating chamber and an egg taking chamber, the horizontal partition plate is provided with a plurality of grilles, and the grilles are arranged in the mating chamber. And an egg taking device is arranged in the egg taking chamber. The mating chamber and the roe taking chamber are separated independently and communicated with each other, the roe taking device is arranged in the roe taking chamber to collect roes, in the roe taking process, the roes do not need to be taken away in advance, the water seepage prevention performance of the box body does not need to be considered, the roes can be taken out easily, the structure is simple, operation is convenient, and roe taking is efficient.

The utility model discloses a fish spawning prevents eating by mistake device belongs to fish culture technical field, including main part mechanism and blocking mechanism, the main part mechanism includes spawning box and partition net, the inside equidistance distribution integral mould has annular portion to partition net, the both sides of spawning box are fixedly connected with mounting panel, the blocking mechanism includes blocking post and inclined plane, the inclined plane is located spawning box's inside bottom, the utility model discloses through setting up the collection of fish roe to inclined plane, and sets up blocking post on the inclined plane, and the range of movement of adult fish is limited, makes fish roe to reach the inclined plane through the blocking post, and adult fish is limited in the narrow space between blocking post and cannot downstream, thereby protecting fish roe not to be eaten by mistake by other adult fish in the area, and setting up partition net is driven to slow speed lifting by electric push rod, thereby through annular portion drive the flow of water near blocking post, prevent fish roe from adhering on the surface of blocking post and falling.

A process for harvesting fish eggs, particularly Salmon fish eggs, is provided. The process comprises rearing sexually immature salmon in an aquatic environment in stages during which at least the exposure to light and the duration of time are regulated. The rearing comprises at least a winter-summer period comprising a winter life cycle stage in which the fry are exposed to light simulating exposure to winter light, and a subsequent summer life cycle stage in which the fry are exposed to light simulating exposure to summer light, wherein the total Accumulated Thermal Unit (ATU) during the winter-summer period does not exceed 5000. The invention also provides salmon eggs produced by the process disclosed.

The utility model relates to caviar processing technical field, specifically disclose a screening device for caviar production, including conveyer belt, the feeding hopper is connected to conveyer belt upper end, the conveyer belt upper end is provided with a plurality of bad seed screening mechanism, and bad seed screening mechanism includes: support frame, mobile box, thorn needle, laser measuring ware, electric reciprocating push rod, electric reciprocating push rod includes drive motor, drive board, connecting rod, down pressure rod, and the conveyer belt upper end is provided with identification camera, and the position of the bad fish roe is obtained through identification camera analysis, when the bad fish roe moves to the lower end of support frame, the thorn needle moves to the upper end of the fish roe, then moves down and pierces the fish roe, the thorn needle moves up and screens out the bad fish roe from numerous fish roe, thereby guaranteeing the overall quality of product, and the whole screening process automation operation, and its operation reduces the link of manual participation, not only reduces the human cost, but also improves production efficiency.

The present invention provides novel antigens of an allergy to fish, methods and kits for diagnosing an allergy to fish, pharmaceutical compositions comprising such an antigen, fishes, fish eggs or processed products of such fish or fish egg in which such an antigen is eliminated, fishes that deliver such fish eggs or are born from such fish egg, and a tester for determining the presence or absence of a fish antigen in an object of interest. The present invention also relates to polypeptides comprising an epitope of an antigen, kits, compositions and methods for diagnosing an allergy, comprising such a polypeptide, pharmaceutical compositions comprising such a polypeptide, and raw materials or processed products in which an antigen comprising such a polypeptide is eliminated or reduced. The present invention further relates to a tester for determining the presence or absence of an antigen in an object of interest.

This utility model relates to the field of spawning ponds and discloses a spawning pond for convenient collection of fish eggs. It includes a water tank, a winding mechanism, a support roller, a net, and a long rod. The winding mechanism is located at the rear end of the water tank. The support roller is fixedly mounted on both sides of the rear edge of the upper surface of the water tank via base bearings. The winding mechanism includes a roller, a collection frame, a rotating block, a reset rod, and two support rods. One end of the roller movably passes through one side of the front end of the collection frame and extends to the outside of the other side. The other end of the roller is rotatably mounted on the rotating block. A cam is fixedly fitted at the end of the roller located inside the collection frame. The reset rod movably passes through the rear end of the collection frame. A limit plate is fixedly installed at the front end of the reset rod, and a spring is fitted on the reset rod. In this utility model, the user rotates the handle to rotate the roller, gradually winding and tightening the net, which is then pulled out of the water. This facilitates single-person operation and significantly improves efficiency.

This utility model relates to the field of aquaculture equipment technology, specifically a fish egg hatching device, including an incubation box, an incubation basket, and a support device. The support device is located inside the incubation box and supports the incubation basket. The support device includes four support components, each with an elastic part. The incubation basket rests against the elastic part. The sides of the incubation basket are made of wooden boards, the vertical height of which matches the elastic deformation range of the elastic part in the vertical direction. The bottom of the incubation basket is a screen, the mesh size of which is between the size of the fish eggs before and after hatching. In use, successfully hatched fish eggs can pass through the upper layer of the screen to the lower layer. When dead eggs remain at the corresponding mesh opening, manually pressing down on the incubation basket causes it to vibrate within a certain range under the action of the elastic part in the support device, thus causing the dead eggs to detach from the mesh opening. This increases the space for successfully hatched fish eggs to pass through the screen, thereby effectively shortening the production time.

The invention discloses a fry hatching device for fry breeding, relates to the technical field of fry breeding, and solves the problems that an existing hatching device is prone to hatching dead angles, poor in modular operation capability, insufficient in water flow control and weak in scene adaptability. The device comprises a hatching pond, and the hatching pond is provided with a fry combined hatching mechanism and a dissolved oxygen constant-temperature flow guide mechanism in a matched mode. The hatching pond is formed by splicing a flow baffle, an inclined backflow plate and a mounting side plate, the fry combined hatching mechanism comprises a plurality of groups of hatching modules which can be independently hoisted, a detachable roe attachment structure and a slow flow anti-disturbance assembly are arranged in each module, a dissolved oxygen constant-temperature flow guide mechanism constructs a closed-loop water circulation system, and the functions of purification, oxygen dissolution, constant temperature and uniform flow guide are integrated. According to the invention, hatching dead angles can be eliminated, multi-module independent controllable hatching is realized, damage of water flow to roes is reduced, multi-type roe hatching is compatible, the stability of the hatching environment is ensured, and the fry hatching survival rate, the fry emergence consistency and the large-scale operation efficiency are remarkably improved.

The utility model relates to experimental consumables, in particular to a perforated plate for zebra fish culture, which comprises a plurality of groups of culture holes, each group of culture holes comprises a plurality of culture holes, adjacent culture holes in the same group are communicated through micropores, the diameters of the micropores are matched with those of eggs of zebra fish, and the diameters of the micropores are matched with those of the eggs of the zebra fish. And when the amount of the culture medium added into the culture holes is a preset volume, the culture medium just enters the micropores. By arranging the micropores, the old culture medium does not need to be sucked away first and then the new culture medium is quantitatively added, only the new culture medium needs to be continuously added on the basis of the old culture medium until the culture medium enters the micropores, at the moment, the volume of the culture medium in the culture holes is close to the preset volume, and the excessive part can be automatically transferred to the communicated adjacent culture holes and does not need to be sucked out manually; and the roes with large direct drop cannot pass through the micropores, so that the operation difficulty of exposing and culturing the roes is reduced by adopting the structure.

The utility model provides a fry hatching device which comprises an aeration temperature control water pool, a roe pool, a fry pool and a plurality of hatching cabins, the bottom of each hatching cabin is connected with the aeration temperature control water pool through a water supply pipeline and connected with the roe pool through a fallopian pipeline, and the side wall of the upper portion of each hatching cabin is provided with an opening and connected with the fry pool through a fry conveying pipeline. The water supply pipeline, the fallopian tube pipeline, the fry conveying pipeline and the backflow water pipeline are all provided with control valves, a filter screen plate is arranged in the hatching cabin and supported on an annular boss on the inner wall of the hatching cabin, the structure is compact, and water flow control and roe filtering are facilitated.

The utility model discloses a device suitable for hatching fertilized eggs of hatched fish, which comprises a water tank (1) and at least one hatching barrel (2), a water inlet header pipe (3) and a water return header pipe (4) are connected between the water tank (1) and the hatching barrel (2), and a water pump (5) is arranged on the water inlet header pipe (3); each hatching barrel (2) is respectively connected with the water inlet main pipe (3) and the water return main pipe (4) through a water inlet branch pipe (9) and a water return branch pipe (10) of the hatching barrel (2); a main body of the hatching barrel (2) is cylindrical, the bottom of the hatching barrel (2) is spherical, the central angle of the spherical bottom is 120-160 degrees, the height-diameter ratio of the barrel is 4-6, and a water outlet of a water inlet branch pipe (9) is right opposite to the center of the spherical bottom and is 2-3 cm away from the bottom. The device is suitable for hatching roes of various hatched fishes, is also suitable for hatching of partial half-hatched and non-hatched demersal roes, and is especially suitable for breeding work in small and medium-sized fishing grounds.

The invention discloses an automatic cleaning device for an inner barrel filter screen of a roe hatching pond, belongs to the technical field of aquaculture equipment, and aims to solve the problems that manual cleaning of an inner barrel filter screen of an existing roe hatching pond wastes time and labor, is poor in safety and easily damages roes / fries. The automatic cleaning device comprises a roe hatching pond inner barrel, an upper guide rail, a lower guide rail, a mounting rack, a synchronous belt transmission and rotating arm revolution assembly, a brush and rotation transmission assembly, a water pipe and a nozzle assembly, wherein the upper guide rail and the lower guide rail are fixed on the roe hatching pond inner barrel; the speed reducing motor drives the brush roller to rotate to brush the filter screen, and meanwhile, the small belt wheel, the synchronous belt and the large belt wheel drive the rotating arm to revolve around the center of the inner barrel to cooperate with the double-row high-pressure nozzles for washing; positive and negative rotation alternation is realized through the water inlet pipe rotary sealing joint and the travel switch, so that the water pipe and the wire are prevented from being wound; 360-degree dead-corner-free cleaning is achieved, the automation degree is high, roes / fries are not damaged, and the device is suitable for various annular roe hatching ponds.

The invention relates to the field of submersible type intelligent fish nests, in particular to a submersible type intelligent fish nest which comprises an upper-layer frame body, a lower-layer frame body, a middle frame body, a fixing frame, a recognition assembly, a connecting structure and a folding mechanism, the middle frame body comprises multiple sets of folding pipes capable of being folded, and a placing net is arranged between the upper-layer frame body and the lower-layer frame body; the folding mechanism comprises an electric cylinder and a connecting rope, and the connecting rope is connected with the multiple supporting pipes of the upper-layer frame body. Through the arrangement of the folding mechanism, the whole fish nest is shrunk when big fishes approach, roes and newly hatched juvenile fishes are concentrated in the center of the placing net, meanwhile, gaps of the fish nest are shrunk, the big fishes are not prone to entering the gaps, and the roes and the juvenile fishes are not prone to being caught and eaten. Meanwhile, the contraction action of the whole fish nest also has a frightening effect on big fishes. Therefore, the probability that the fish eggs in the fish nest and newly hatched juvenile fishes are caught by big fishes can be reduced, and the maturity rate of the juvenile fishes and the fish eggs is improved.

The present application belongs to the technical field of fish egg hatching, and discloses a hatching device which comprises a water storage box and a hatching cylinder arranged in the water storage box and forming four diagonal cavities with the inner cavity of the water storage box, a water tank opened on the surface of the hatching cylinder for communicating with the diagonal cavities, a drainage cylinder arranged in the middle of the inner cavity of the hatching cylinder and connected to an external water circulation system, a water guide plate arranged on the inner cavity wall of the hatching cylinder, a first ball valve and a second ball valve arranged at the diagonal positions on the two sides of the water storage box respectively, wherein water is injected into the diagonal cavities through the first ball valve and the second ball valve, the water is injected into the hatching cylinder through the water tank, and the water flow is guided by the water guide plate to form a circulating flow. The complete set of the hatching device can be used for hatching about 100,000 to 200,000 fertilized marine buoyant fish eggs, and the hatching rate can reach more than 85%, and the device has the advantages of high hatching rate and high survival rate when hatching relatively weak buoyant fish eggs.

The invention discloses circulating purification type fry hatching equipment in the technical field of fry hatching, which comprises a hatching pond and a plurality of outer blocking assemblies located in the hatching pond, inner blocking assemblies are arranged in the centers of the outer blocking assemblies, and purification mechanisms are arranged in the inner blocking assemblies. The purification mechanism comprises a movable piston assembly, a pollution discharge assembly and a multi-stage annular filtering assembly; water needing to be purified is concentrated at the bottom of the inner blocking assembly and sealed, the treatment capacity is small, and impurities, waste and the like are prevented from being scattered and dispersed to other positions of the water during treatment; the purification mechanism is internally arranged, the function and the structure are centralized, the space utilization rate is high, the purification mechanism is separated from the annular incubation area through the inner blocking assembly, direct contact with fish eggs, fish fries and the like is avoided, and the influence of purification work on the fish fries is reduced; the internal circulating purified water flow path is short, the water temperature and water quality are uniform, the circulating water flow is mild, and the impact of strong water flow possibly generated by an external water pump on fragile fries is avoided.

The utility model relates to the technical field of culture devices, and discloses a zebra fish culture device which comprises a culture outer box and a box cover which is arranged on the upper portion of the culture outer box and can be opened and closed, a culture inner box and a collection and incubation inner box are arranged in the culture outer box, a partition plate which can be taken out is inserted in the culture inner box, and a grid plate is arranged at the bottom in the culture inner box. A plurality of ovulation holes are formed in the inner bottom of the breeding inner box in a penetrating mode, a plurality of ovulation pipes matched with the ovulation holes are fixedly installed on the lower portion of the breeding inner box, a plurality of connecting plates are fixedly installed on the upper portion of the collecting and hatching inner box, guide pipes matched with the ovulation pipes are fixedly installed at one ends of the connecting plates, and a plurality of rotating shafts are rotationally connected to the lower portion of the breeding inner box. Plectrum rods are fixedly mounted on the side surfaces of the rotating shafts. According to the device, the stirring piece rod rotates to drive the sealing plate to rotate to separate the lower end of the fish ovulation pipe, and the fish ovulation pipe is matched with the grid plate to filter the fish ovulation pipe, so that the fish ovulation pipe can collect the fish ovulation, and the collecting effect of the zebra fish ovulation pipe is improved.

This invention relates to the field of fish egg hatching technology, and more particularly to a fish egg hatching device with adjustable water flow speed. The invention provides a fish egg hatching device capable of recycling water resources and adjusting the water flow speed. The device includes a base, a water tank, and an adjustment mechanism. The water tank is connected to the top of the base, and water inlets are located on both the front and rear sides of the water tank. The adjustment mechanism is mounted on the water tank. This invention uses a water pump to draw water from the water tank, causing the water to circulate within a circulation pipe, increasing the oxygen content in the water. Simultaneously, a dual-axis motor controls the water flow speed to prevent fish egg decay and infection, thereby improving the hatching success rate.

An artificial fish egg comprises a seamless capsule and a thick seasoning liquid.

The utility model discloses a portable preservation device for sturgeon roe samples, which belongs to the technical field of biological sample preservation equipment and comprises a preservation box body, a sealing cover plate is arranged on the upper surface of the preservation box body, an operating handle is fixedly mounted on the upper surface of the sealing cover plate, and damping spring columns are fixedly mounted at the bottom of the inner wall of the preservation box body. A storage box is fixedly installed on the upper surfaces of the damping spring columns, and a semiconductor refrigeration device is fixedly installed on the lower surface of the storage box. According to the portable storage device for the sturgeon roe samples, the rotating motor is arranged to drive the rotating fan blades to rotate, the temperature of the storage box can be accurately controlled in cooperation with the semiconductor chilling plate, the heat dissipation fins and the heat conduction frame, it is ensured that the sturgeon roe samples are always in a proper low-temperature environment, and the biological activity of the sturgeon roe samples is effectively maintained; the roe activity reduction and even death caused by temperature change are effectively avoided, and the sturgeon roe can be better transported and stored.