239 results about "Fish egg" patented technology

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 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 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 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 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.

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 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 an artificial fish nest for ecological purification and restoration of a river channel, and belongs to the technical field of artificial fish nests. The artificial fish nest comprises a fish nest frame, and hatching structures for providing hatching places for roes are mounted on the upper side of the fish nest frame and in the frame; the fish nest frame is made of floatable materials, and a fixing block is fixedly connected to the upper portion of the fish nest frame. A protection mechanism is arranged on the fixing block and used for protecting the space above the fish nest frame, and fish eggs on the upper side are prevented from being affected by the outside. A switching mechanism is arranged on the fixing block and used for switching the protection mechanism to the side face position of the fish nest frame. According to the device, the space above the fish nest frame can be protected through the protection mechanism, it can be effectively avoided that raindrops flush away fish eggs close to the water surface during rainstorm, it can be effectively avoided that birds prey on the fish eggs or external objects fall off and hit the fish eggs, and the safety of the fish eggs can be effectively guaranteed.

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.

The utility model provides a red scale roe cleaning device, which relates to the technical field of cleaning devices and comprises a cleaning box, a hole is formed in the top of the cleaning box, and a rotating rod is movably inserted into the inner surface wall of the hole. According to the fish egg cleaning device, water is poured into the cleaning box through the water inlet pipe, then fish eggs are put into the cleaning box from the first square hole, the sealing cover is inserted into the two clamping grooves, and the sealing strip is located between the cleaning box and the sealing cover, so that the sealing performance of the sealing cover can be remarkably improved, and a gap between the sealing cover and the device body can be reduced; secondly, a controller starts a driving motor to drive a set of stirring blades to rotate, the stirring blades are made of rubber materials, the roes can be gently turned over in the stirring process, mechanical damage to the roes is avoided, meanwhile, it is guaranteed that the roes fully move in the cleaning tank, and the roes are cleaned more thoroughly; all the surfaces of the roes can be effectively cleaned.

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.

The invention discloses a method for forecasting roe drifting. The method comprises the following steps: S1, acquiring a river section influence factor sequence and roe quantity in a research area in historical data; s2, according to the research area river segment influence factor sequence and the roe amount in the historical data obtained in the step S1, a prediction model of research area river segment multi-scale factor fusion is constructed; s3, performing significant inspection and correction on the prediction model of the river section multi-scale factor fusion of the research area constructed in the step S2 to obtain a corrected prediction model of the river section multi-scale factor fusion of the research area; s4, obtaining the influence factors of the river section of the daily research area, and forecasting the daily roe drifting condition of the fish by using the corrected forecasting model of the river section multi-scale factor fusion of the research area obtained in the step S3; according to the method, the fish roe drifting is predicted by constructing the multi-scale factor fusion prediction model, the prediction accuracy is improved, and meanwhile, the channel engineering construction of the research area is enabled to avoid the peak period of fish oviposition.