A method for breeding and hatching fish fry

Abstract

This invention provides a method for breeding and hatching fish fry, comprising the following steps: placing multiple fish ovaries sequentially into a sunflower seed coat, and adjusting the hatching mechanism to lower the ovaries below the water surface of the hatching tank; activating the heating component to heat and regulate the water temperature in the hatching tank, while simultaneously adjusting the water level of the ovaries within the tank; and continuously supplying oxygen to the hatching tank via an aeration mechanism, waiting for the fish fry in the ovaries to hatch. This invention, through the design of the hatching device, allows for the overall raising and lowering of the fish ovaries and independent, staged adjustments for each group. It enables precise position control for different fish species and different hatching cycles. One device can simultaneously hatch multiple species of fish fry, improving space and equipment utilization. Furthermore, after hatching, the fish fry can be collected centrally via a collection mechanism, avoiding mechanical damage caused by manual harvesting. The method is simple to operate, highly efficient, and suitable for large-scale aquaculture.

Description

Technical Field

[0001] This invention relates to a method for breeding and hatching fish fry, belonging to the field of fish fry breeding technology. Background Technology

[0002] Artificial breeding and hatching of fish fry is a core part of aquaculture. Currently, traditional hatching methods generally suffer from technical defects such as poor water temperature control, uneven dissolved oxygen distribution, inconvenience in adjusting the depth of fish nests, and low efficiency in fry harvesting.

[0003] There is a clear temperature stratification between natural water bodies and conventional hatching ponds. The diurnal temperature range can easily lead to a decrease in the hatching rate of fish eggs and an increase in the deformity rate of fry. It is impossible to accurately match the optimal water layer temperature according to different fish species and different hatching stages. In addition, the height of fish nests is mostly fixed, making it difficult to achieve overall unified adjustment and individual fine-tuning, which cannot adapt to the hatching water layer requirements of different fish eggs. Furthermore, after hatching, the fish fry are small in size and have weak swimming ability. Traditional fishing methods can easily damage the fish fry, and the operation is cumbersome, time-consuming and labor-intensive, resulting in low efficiency in large-scale aquaculture. Summary of the Invention

[0004] In view of the shortcomings of existing technologies, the purpose of this invention is to provide a method for breeding and hatching fish fry.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: A method for breeding and hatching fish fry, comprising the following steps: Multiple fish ovaries are placed into the sunflower seed coat in sequence, and the fish ovaries are lowered below the water surface of the hatching tank by adjusting the hatching mechanism; The heating components are activated to heat and regulate the water temperature in the hatching tank. At the same time, the water level of the ovaries in the hatching tank is adjusted, and the oxygenation mechanism continuously supplies oxygen into the hatching tank, waiting for the fry on the ovaries to hatch. After the fish fry hatch, the hatching mechanism is adjusted to remove the fish ovaries from the water layer and raise them to the highest position above the hatching tank. The fry collection mechanism is activated, causing the fishing net frame located at the bottom of the hatching pool to rise and collect the fish fry from the hatching pool.

[0006] Preferably, the incubation device includes an incubation pool, the interior of which is uniformly provided with a plurality of mesh partitions, which divide the space inside the incubation pool into a plurality of incubation spaces. A seedling collection mechanism and an oxygenation mechanism are provided between the plurality of incubation spaces. An adjusting incubation mechanism is provided within the incubation space and above the seedling collection mechanism. A heating component is provided at the bottom of the incubation pool, the heating component including a heating coil, which is arranged around the outer wall and inner wall of the incubation pool.

[0007] Preferably, the seedling collection mechanism includes an installation cavity located at the center of the bottom of the incubation pool. An adjusting cylinder is installed at the top of the installation cavity. The top output end of the adjusting cylinder extends through to the top of the incubation pool and is connected and fixed to an adjusting plate. Several connecting plates are evenly arranged at the bottom edge of the adjusting plate. The connecting plates correspond to the incubation space. The bottom end of the connecting plate extends through to the incubation space and is connected and fixed to a fishing net frame. The fishing net frame is located at the bottom inner part of the incubation space.

[0008] Preferably, the oxygenation mechanism includes an oxygenator installed at the bottom of the installation cavity, the oxygenator being located below the regulating cylinder, the output end of the oxygenator being connected to a coil, the coil being connected to a plurality of oxygen supply pipes, the oxygen supply pipes corresponding to the incubation space, and the ends of the oxygen supply pipes penetrating into the incubation space and connecting to the sand head.

[0009] Preferably, the adjusting incubation mechanism includes two fixed seats symmetrically fixed to the outer surfaces of both sides of the incubation pool. A lifting cylinder is installed at the top center of the fixed seats. Several guide rods are fixed to the side of the lifting cylinder. A fixed plate is slidably connected between the guide rods. The telescopic end of the lifting cylinder is connected and fixed to the bottom of the fixed plate. A support plate is fixed between the two fixed plates. A cover is connected to the top of the support plate. A turntable is rotatably connected to the top center of the support plate. A servo motor connected to the turntable is installed at the bottom center of the support plate. A drive assembly is installed on the top of the turntable. Several adjusting components adapted to the drive assembly are evenly arranged at the top edge of the support plate. Several incubation components adapted to the adjusting components are fixedly connected to the bottom edge of the support plate. The incubation components correspond to the incubation space.

[0010] Preferably, the drive assembly includes two guide members fixed to the top of the turntable, each guide member having a guide sleeve slidably fitted on it, and an inclined seat fixedly connected between the two guide sleeves. One side of the inclined seat has an inclined push end, and a protrusion is fixed to the top of the inclined seat. The protrusion is connected to the output end of a transverse cylinder, which is mounted on the top of the two guide members.

[0011] Preferably, the adjusting assembly includes a guide cylinder and a support leg fixed to the top of the support plate. A guide arm is slidably connected to the guide cylinder. A horizontal plate is fixed between the tops of the guide arms on both sides. A second horizontal cylinder is fixedly installed on one side of the top of the horizontal plate. The telescopic end of the second horizontal cylinder is connected and fixed to a slider. The slider is slidably connected to the horizontal plate via a slide rail. A push plate is fixed to the top of each side of the slider. Several slots are evenly spaced on the top of the two push plates on opposite sides. A middle plate and two side plates are provided above the two push plates. Several positioning rods are evenly spaced on the top of the middle plate. The two side plates are located on both sides of the middle plate. An movable gap is formed between the side plates and the middle plate to match the two push plates. The ends of the middle plate and the side plates are respectively connected and fixed to the top of one of the support legs. An inclined block is fixed at the bottom center of the horizontal plate. The inclined block is adapted to the inclined push end.

[0012] Preferably, the hatching assembly includes a fixed sleeve fixed to the bottom of the support plate, a lifting rod slidably connected vertically to the bottom of the fixed sleeve, a base plate fixed to the bottom of the lifting rod, a plurality of fish ovaries fixed to the bottom of the base plate, a traction rope fixedly connected to the top of the lifting rod, the top of the traction rope movably passing through the fixed sleeve to the top of the support plate and fixedly connected to a locking collar, the locking collar being sleeved and engaged on the positioning rod, the slot engaging and fitting with the locking collar, and a through hole formed between the two guide cylinders to movably fit the inclined push end.

[0013] Preferably, the fish ovary is a net cage structure, and the inside of the fish ovary is lined with a sunflower seed coat.

[0014] Preferably, the mesh openings on the plurality of mesh partitions increase in size sequentially in a clockwise direction, and the servo motor is provided with a waterproof outer shell.

[0015] Beneficial effects: Through the design of the incubation device, this invention can realize the overall lifting and lowering of the fish ovaries and the independent staged adjustment of each group. It can precisely control the position for different fish species and different incubation cycles. One device can meet the simultaneous incubation of multiple species of fish fry, improve the utilization rate of space and equipment. Furthermore, after the fish eggs have hatched, the fry can be collected in a centralized manner through the fry collection mechanism, avoiding mechanical damage caused by manual fishing. It is simple to operate, highly efficient, and suitable for large-scale aquaculture.

[0016] This invention addresses the challenge of catching fish fry after hatching by designing a seedling collection mechanism. When transferring the fry to the rearing pond, the pond is relatively deep and the fry are small, making catching them inconvenient. To facilitate quick catching, the empty fish ovaries are raised above the water surface, and then an adjustable cylinder drives an adjusting plate, a connecting plate, and several fishing net frames to rise from the bottom of the hatching pond to the surface, making it easier for aquaculture workers to catch the fry.

[0017] This invention, through the design of an oxygenation mechanism, can be used to increase the dissolved oxygen in the water during fish fry hatching, ensuring that the fish fry can hatch normally and improving the survival rate. The oxygenation mechanism is a publicly available technology and will not be described in detail here. The overall design of the device meets the usage requirements, has a simple and reasonable structure, and improves the hatching and survival rate of fish fry.

[0018] This invention, through the design of the incubation mechanism, allows for the adjustment of the height of several fish ovaries when the height needs to be uniformly adjusted. This can be achieved by adjusting the height of the fixed plate and the support plate through the lifting cylinders on both sides, thereby adjusting the submersion depth of the fish ovaries inside the incubation pool. This not only meets the incubation requirements but also avoids large temperature differences between day and night, and different water temperatures between the surface and the bottom, which could affect the hatching of fish fry.

[0019] This invention utilizes a drive component design that addresses the different hatching cycles of various fish eggs. When only the height of the ovary within a single hatching space needs adjustment, the lifting cylinder remains stationary. Instead, the servo motor at the bottom of the support plate drives the inclined plate on the turntable to rotate to the corresponding adjustment component. Then, once the transverse cylinder on the turntable is activated, it pushes the inclined plate linearly via a protrusion. The inclined push end at the end of the inclined plate then drives the corresponding adjustment mechanism.

[0020] This invention, through the design of the adjustment components, allows the inclined push end at the end of the inclined seat on the drive component to press against the inclined block at the bottom of the horizontal plate while the inclined seat moves. Under the pressure of the inclined surface, the inclined block drives the horizontal plate, slider, and push plate to rise. As the push plate rises, its top extends through the movable gap formed between the side plate and the middle plate to the top of the positioning rod. Furthermore, one of the slots on the top of the push plate engages with the bottom of the locking collar sleeved on the positioning rod, achieving synchronous pushing. The rise of the push plate pushes the locking collar to rise and gradually disengage from the positioning rod. At this time, the second transverse cylinder pushes the slider to move laterally, and the slider drives the push plate to move laterally a predetermined distance, causing the locking collar to move laterally to the top of the positioning rod at the adjacent position. Then, the inclined push end resets and moves to release the pressure from the inclined block. Under the action of gravity, the horizontal plate, slider, push plate, and locking collar descend, causing the locking collar to engage with the positioning rod at the corresponding position. In this way, the position of the locking collar can be adjusted in stages.

[0021] This invention, through the design of the incubation component, achieves the purpose of adjusting the height of a single group of fish ovaries by using a traction rope to pull the lifting rod in stages while the locking collar is adjusted in cooperation with the drive and adjustment components. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a process flow diagram of a fish fry breeding and hatching method according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the hatching device structure for a fish fry breeding and hatching method according to an embodiment of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the hatching device structure for a fish fry breeding and hatching method according to an embodiment of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the oxygenation mechanism in a hatching device for a fish fry breeding and hatching method according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the seed collection mechanism in an incubation device for a fish fry breeding and incubation method according to an embodiment of the present invention. Figure 6 This is a schematic diagram of a partial structure of the adjusting incubation mechanism in an incubation device for a fish fry breeding and incubation method according to an embodiment of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of a partial structure of the adjusting incubation mechanism in an incubation device for a fish fry breeding and incubation method according to an embodiment of the present invention. Figure 2 ; Figure 8 This is a schematic diagram of the structure of the adjusting incubation mechanism in an incubation device for a fish fry breeding and incubation method according to an embodiment of the present invention. Figure 1 ; Figure 9 This is a schematic diagram of the structure of the adjusting incubation mechanism in an incubation device for a fish fry breeding and incubation method according to an embodiment of the present invention. Figure 2 ; Figure 10 This is a schematic diagram of the structure of the adjusting incubation mechanism in an incubation device for a fish fry breeding and incubation method according to an embodiment of the present invention. Figure 3 .

[0024] In the diagram, 1. Hatching pool; 2. Mesh partition; 3. Aerator; 4. Aeration pipe; 5. Sand head; 6. Adjusting cylinder; 7. Adjusting plate; 8. Connecting plate; 9. Fishing net frame; 10. Fixed seat; 11. Lifting cylinder; 12. Guide rod; 13. Fixed plate; 14. Support plate; 15. Cover; 16. Fixed sleeve; 17. Lifting rod; 18. Traction rope; 19. Bottom plate; 20. Fish ovary; 21. Locking collar; 22. Guide cylinder; 23. Guide arm; 24. Horizontal plate; 25. Inclined block; 26. Sliding block; 27. Push plate; 28. Slot; 29. ​​Middle plate; 30. Side plate; 31. Positioning rod; 32. Turntable; 33. Inclined seat; 34. Guide sleeve; 35. Guide component; 36. Protrusion; 37. Horizontal cylinder one; 38. Inclined push end. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] According to an embodiment of the present invention, a method for breeding and hatching fish fry is provided.

[0027] like Figure 1 As shown, the method for breeding and hatching fish fry includes the following steps: Step S101: Place multiple fish ovaries 20 into the sunflower seed coat in sequence, and adjust the hatching mechanism to place the fish ovaries 20 below the water surface of the hatching tank 1. Step S103: Start the heating component to heat and regulate the water temperature of the hatching tank 1. At the same time, adjust the water level of the ovary 20 in the hatching tank 1. The oxygenation mechanism continuously supplies oxygen to the hatching tank 1 and waits for the fish fry on the ovary 20 to hatch. Step S105: After the fish fry hatch, the fish ovaries 20 are removed from the water layer by adjusting the hatching mechanism and raised to the highest position above the hatching pool 1. Step S107: Start the seedling collection mechanism to raise the fishing net frame 9 located at the bottom of the hatching pool 1 and collect the fish fry in the hatching pool 1.

[0028] In this alternative embodiment, such as Figure 2-3As shown, the hatching device includes a hatching pool 1. Several mesh partitions 2 are evenly arranged inside the hatching pool 1, with the mesh size increasing clockwise. These partitions divide the space within the hatching pool 1 into several hatching spaces. A seedling collection mechanism and an aeration mechanism are provided between these hatching spaces. An adjustment hatching mechanism is located within each hatching space and above the seedling collection mechanism. A heating component, including a heating coil, is installed at the bottom of the hatching pool 1, surrounding the outer and inner walls of the hatching pool 1. This heating component ensures a uniform water temperature within the hatching pool 1, preventing temperature differences between different water layers and meeting the environmental conditions for fry hatching. A water outlet pipe is vertically installed in the middle of the hatching pool 1, and a water quality testing component is installed on the outer wall of the outlet pipe. This testing component can be a water quality analyzer or an aquaculture instrument; this part is existing technology.

[0029] In this alternative embodiment, such as Figure 5 As shown, the seedling collection mechanism includes an installation cavity located at the center of the bottom of the hatching pool 1. An adjusting cylinder 6 is installed at the top of the installation cavity. The top output end of the adjusting cylinder 6 extends through to the top of the hatching pool 1 and is connected and fixed to an adjusting plate 7. Several connecting plates 8 are evenly arranged at the bottom edge of the adjusting plate 7. The connecting plates 8 correspond to the hatching space, and the bottom end of the connecting plates 8 extends through to the hatching space and is connected and fixed to a fishing net frame 9. The fishing net frame 9 is located at the bottom of the hatching space. After the fry hatch, when it is necessary to transfer the fry to the rearing pool, it is inconvenient to catch the fry because the water inside the hatching pool is relatively deep and the fry are small. At this time, in order to catch them quickly, after the empty fish ovaries 20 are raised above the water surface, the adjusting cylinder 6 can be used to drive the adjusting plate 7, the connecting plate 8, and several fishing net frames 9 from the bottom of the hatching pool 1 to the surface of the water, making it convenient for the aquaculture personnel to catch them.

[0030] In this alternative embodiment, such as Figure 4 As shown, the aeration mechanism includes an aerator 3 installed at the bottom of the mounting cavity. The aerator 3 is located below the regulating cylinder 6. The output end of the aerator 3 is connected to a coil, and several oxygen supply pipes 4 are connected to the coil. The oxygen supply pipes 4 correspond to the hatching space, and the ends of the oxygen supply pipes 4 extend into the hatching space and connect to the sand head 5. The aeration mechanism is used to increase the dissolved oxygen in the water during fish fry hatching, ensuring that the fish fry can hatch normally and improving the survival rate. The aeration mechanism is a publicly available technology and will not be described in detail here. The overall design of the device meets the usage requirements, has a simple and reasonable structure, and improves the hatching and survival rate of fish fry.

[0031] In this alternative embodiment, such as Figure 3 , Figure 6 As shown, the adjusting incubation mechanism includes two symmetrically fixed bases 10 on the outer surfaces of both sides of the incubation pool 1. A lifting cylinder 11 is installed at the top center of the fixed base 10. Several guide rods 12 are fixed to the side of the lifting cylinder 11. A fixed plate 13 is slidably connected between the guide rods 12. The telescopic end of the lifting cylinder 11 is connected and fixed to the bottom of the fixed plate 13. A support plate 14 is fixed between the two fixed plates 13. A cover 15 is connected to the top of the support plate 14. A turntable 32 is rotatably connected to the top center of the support plate 14. A servo motor connected to the turntable 32 is installed at the bottom center of the support plate 14. The outer side of the servo motor is provided with The waterproof outer shell has a drive assembly installed on the top of the turntable 32. Several adjustment components adapted to the drive assembly are evenly arranged at the top edge of the support plate 14. Several hatching components adapted to the adjustment components are fixedly connected at the bottom edge of the support plate 14. The hatching components correspond to the hatching space. By adjusting the setting of the hatching mechanism, when it is necessary to uniformly adjust the height of several fish ovaries 20, the height of the fixed plate 13 and the support plate 14 can be adjusted by the lifting cylinders 11 on both sides, thereby achieving the purpose of adjusting the sinking depth of the fish ovaries 20 in the hatching pool 1. While meeting the hatching requirements, it can avoid large temperature differences between day and night, and different water temperatures between the surface and the bottom, which would affect the hatching of fish fry.

[0032] In this alternative embodiment, such as Figures 9-10 As shown, the drive assembly includes two guide members 35 fixed to the top of the turntable 32. A guide sleeve 34 is slidably fitted on each of the two guide members 35. An inclined seat 33 is fixedly connected between the two guide sleeves 34. An inclined pushing end 38 is provided on one side of the inclined seat 33. A protrusion 36 is fixed on the top of the inclined seat 33. The protrusion 36 is connected to the output end of the transverse cylinder 37. The transverse cylinder 37 is installed on the top of the two guide members 35. Because the hatching cycle of different types of fish eggs is different, when only the height of the fish ovary 20 in a certain hatching space needs to be adjusted, the lifting cylinder 11 is not activated. The servo motor at the bottom of the support plate 14 drives the inclined seat 33 on the turntable 32 to rotate to the corresponding adjustment assembly. Then, the transverse cylinder 37 on the turntable 32 is activated, and the inclined seat 33 is pushed to move linearly through the protrusion 36. The inclined pushing end 38 at the end of the inclined seat 33 pushes the corresponding adjustment mechanism to move.

[0033] In this alternative embodiment, such as Figures 9-10As shown, the adjustment assembly includes a guide cylinder 22 fixed to the top of the support plate 14 and a support leg. A guide arm 23 is slidably connected to the guide cylinder 22. A horizontal plate 24 is fixed between the tops of the guide arms 23 on both sides. A horizontal cylinder 22 is fixedly installed on one side of the top of the horizontal plate 24. The telescopic end of the horizontal cylinder 22 is connected and fixed to a slider 26. The slider 26 is slidably connected to the horizontal plate 24 via a slide rail. A push plate 27 is fixed to the top of each side of the slider 26. Several slots 28 are evenly spaced on the top of the two push plates 27 on opposite sides. Above the push plate 27, there is a middle plate 29 and two side plates 30. Several positioning rods 31 are fixed at equal intervals on the top of the middle plate 29. The two side plates 30 are located on both sides of the middle plate 29, forming an movable gap between the side plates 30 and the middle plate 29 that matches the two push plates 27. The ends of both the middle plate 29 and the side plates 30 are respectively connected and fixed to the top of one of the support legs. A sloped block 25 is fixed at the bottom center of the horizontal plate 24, and the sloped block 25 matches the sloped push end 38. A gap is formed between the two guide cylinders 22... The inclined push end 38 has a movable through hole; while the inclined seat 33 on the drive assembly moves, its inclined push end 38 passes through the through hole between the two guide cylinders 22 and presses against the inclined block 25 at the bottom of the horizontal plate 24. Under the pressure of the inclined surface, the inclined block 25 drives the horizontal plate 24, the slider 26 and the push plate 27 to rise. As the push plate 27 rises, its top passes through the movable gap formed between the side plate 30 and the middle plate 29 to the top of the positioning rod 31. Furthermore, one of the slots 28 on the top of the push plate 27 will engage with the bottom of the locking collar 21 sleeved on the positioning rod 31 to achieve synchronous pushing. As the push plate 27 rises, it pushes the locking collar 21 upward and gradually disengages from the positioning rod 31. At this time, the transverse cylinder pushes the slider 26 laterally, and the slider 26 drives the push plate 27 to move laterally a specified distance, so that the locking collar 21 moves laterally above the positioning rod 31 in the adjacent position. Then, the inclined push end 38 resets and moves to release the compression from the inclined block 25. Under the action of gravity, the horizontal plate 24, the slider 26, the push plate 27, and the locking collar 21 descend, so that the locking collar 21 is engaged with the positioning rod 31 in the corresponding position. In this way, the position of the locking collar 21 is adjusted in stages.

[0034] In this alternative embodiment, such as Figure 8As shown, the hatching assembly includes a fixed sleeve 16 fixed to the bottom of the support plate 14. A lifting rod 17 is vertically slidably connected to the bottom of the fixed sleeve 16. A base plate 19 is fixed to the bottom of the lifting rod 17. Several fish ovaries 20 are fixed to the bottom of the base plate 19. The fish ovaries 20 are net cage structures. The inside of the fish ovaries 20 is provided with palm fiber, which is made of palm wood and meets the requirements for fish ovulation. A traction rope 18 is fixedly connected to the top of the lifting rod 17. The top of the traction rope 18 moves through the fixed sleeve 16 to the top of the support plate 14 and is fixedly connected to a locking ring 21. The locking ring 21 is sleeved and snapped onto the positioning rod 31. The slot 28 is engaged and adapted with the locking ring 21. The locking ring 21 is adjusted in stages with the cooperation of the drive assembly and the adjustment assembly. At the same time, the traction rope 18 pulls the lifting rod 17, thereby achieving the purpose of adjusting the height of a single group of fish ovaries 20.

[0035] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method for breeding and hatching fish fry, characterized in that, The method for breeding and hatching fish fry includes the following steps: Multiple fish ovaries (20) were placed into the sunflower seed coat in sequence, and the fish ovaries (20) were placed below the water surface of the hatching pool (1) by adjusting the hatching mechanism on the hatching device; The heating components are activated to heat and regulate the water temperature in the hatching tank (1). At the same time, the water level of the ovary (20) in the hatching tank (1) is adjusted. The oxygenation mechanism continuously supplies oxygen to the hatching tank (1) and waits for the fry in the ovary (20) to hatch. After the fish fry hatch, the ovaries (20) are removed from the water layer by adjusting the hatching mechanism and raised to the highest position above the hatching pool (1); The seedling collection mechanism is activated to lift the fishing net frame (9) located at the bottom of the hatching pool (1) and to collect the fish fry in the hatching pool (1).

2. The method for breeding and hatching fish fry according to claim 1, characterized in that, The incubation device includes an incubation pool (1), and several mesh partitions (2) are evenly arranged inside the incubation pool (1). The mesh partitions (2) divide the space inside the incubation pool (1) into several incubation spaces. A seedling collection mechanism and an oxygenation mechanism are provided between the several incubation spaces. An adjustment incubation mechanism is provided in the incubation space and above the seedling collection mechanism. A heating component is provided at the bottom of the incubation pool (1). The heating component includes a heating coil, which is arranged around the outer wall and inner wall of the incubation pool (1).

3. The method for breeding and hatching fish fry according to claim 2, characterized in that, The seedling collection mechanism includes an installation cavity located at the center of the bottom of the incubation pool (1). An adjusting cylinder (6) is installed at the top of the installation cavity. The top output end of the adjusting cylinder (6) extends through to the top of the incubation pool (1) and is connected and fixed to the adjusting plate (7). Several connecting plates (8) are evenly arranged at the bottom edge of the adjusting plate (7). The connecting plates (8) correspond to the incubation space. The bottom end of the connecting plate (8) extends through to the incubation space and is connected and fixed to the fishing net frame (9). The fishing net frame (9) is located at the bottom of the incubation space.

4. The method for breeding and hatching fish fry according to claim 3, characterized in that, The oxygenation mechanism includes an oxygenator (3) installed at the bottom of the installation cavity. The oxygenator (3) is located below the regulating cylinder (6). The output end of the oxygenator (3) is connected to a coil. Several oxygen delivery pipes (4) are connected to the coil. The oxygen delivery pipes (4) correspond to the incubation space. The end of the oxygen delivery pipes (4) extends into the incubation space and is connected to the sand head (5).

5. The method for breeding and hatching fish fry according to claim 4, characterized in that, The regulating incubation mechanism includes two symmetrically fixed seats (10) on the outer surfaces of both sides of the incubation pool (1). A lifting cylinder (11) is installed at the top center of the fixed seat (10). Several guide rods (12) are fixed on the side of the lifting cylinder (11). A fixed plate (13) is slidably connected between the several guide rods (12). The telescopic end of the lifting cylinder (11) is connected and fixed to the bottom of the fixed plate (13). A support plate (14) is fixed between the two fixed plates (13). A cover (15) is connected to the top. A turntable (32) is rotatably connected to the top center of the support plate (14). A servo motor connected to the turntable (32) is installed at the bottom center of the support plate (14). A drive assembly is installed on the top of the turntable (32). Several adjustment components adapted to the drive assembly are evenly arranged at the top edge of the support plate (14). Several incubation components adapted to the adjustment components are fixedly connected at the bottom edge of the support plate (14). The incubation components correspond to the incubation space.

6. The method for breeding and hatching fish fry according to claim 5, characterized in that, The drive assembly includes two guide members (35) fixed on the top of the turntable (32). A guide sleeve (34) is slidably fitted on each of the two guide members (35). An inclined seat (33) is fixedly connected between the two guide sleeves (34). An inclined push end (38) is provided on one side of the inclined seat (33). A protrusion (36) is fixed on the top of the inclined seat (33). The protrusion (36) is connected to the output end of a transverse cylinder (37). The transverse cylinder (37) is installed on the top of the two guide members (35).

7. A method for breeding and hatching fish fry according to claim 6, characterized in that, The adjustment assembly includes a guide cylinder (22) fixed to the top of the support plate (14) and a support leg. A guide arm (23) is slidably connected to the guide cylinder (22). A horizontal plate (24) is fixed between the tops of the guide arms (23) on both sides. A horizontal cylinder II is fixedly installed on one side of the top of the horizontal plate (24). The telescopic end of the horizontal cylinder II is connected and fixed to the slider (26). The slider (26) is slidably connected to the horizontal plate (24) through a slide rail. A push plate (27) is fixed to the top of each side of the slider (26). Several slots (28) are evenly spaced on the top of the two push plates (27) on opposite sides. Above the two push plates (27), there is a middle plate (29) and two side plates (30). Several positioning rods (31) are fixed at equal intervals on the top of the middle plate (29). The two side plates (30) are located on both sides of the middle plate (29). The two side plates (30) and the middle plate (29) form an movable gap that is compatible with the two push plates (27). The ends of the middle plate (29) and the side plates (30) are respectively connected and fixed to the top of one of the support legs. An inclined block (25) is fixed at the bottom center of the horizontal plate (24). The inclined block (25) is compatible with the inclined push end (38).

8. A method for breeding and hatching fish fry according to claim 7, characterized in that, The hatching assembly includes a fixed sleeve (16) fixed to the bottom of the support plate (14). A lifting rod (17) is vertically slidably connected to the bottom of the fixed sleeve (16). A base plate (19) is fixed to the bottom of the lifting rod (17). Several fish ovaries (20) are fixed to the bottom of the base plate (19). A traction rope (18) is fixedly connected to the top of the lifting rod (17). The top of the traction rope (18) moves through the fixed sleeve (16) to the top of the support plate (14) and is fixedly connected to the locking collar (21). The locking collar (21) is sleeved and snapped onto the positioning rod (31). The slot (28) is snapped and matched with the locking collar (21). A through hole is formed between the two guide cylinders (22) to be adapted to the movement of the inclined push end (38).

9. A method for breeding and hatching fish fry according to claim 8, characterized in that, The fish ovary (20) is a net cage structure, and the inside of the fish ovary (20) is covered with a sunflower seed coat.

10. A method for breeding and hatching fish fry according to claim 9, characterized in that, The mesh openings on several mesh partitions (2) increase sequentially in a clockwise direction, and the servo motor is provided with a waterproof outer shell.

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