Experimental device for studying influence of single variable on small fish breeding

Abstract

The invention relates to the field of aquaculture, in particular to an experimental device for studying the influence of a single variable on small fish breeding, and provides the following scheme aiming at the problem that a small fish breeding experimental device in the prior art needs to regulate and control irrelevant variables in different tanks: the experimental device comprises a fish tank, and is characterized in that a plurality of partition assemblies are mounted in the fish tank; a plurality of partition assemblies are arranged in the fish tank and divide the inner side of the fish tank into a plurality of culture spaces, spawning assemblies are detachably mounted in the culture spaces, a mounting plate is arranged at the top of the fish tank, and a filtering mechanism used for filtering water is mounted on the mounting plate; the spawning assembly comprises a separation net arranged on the inner side of the fish tank, a top plate fixed to the top of the separation net and a plurality of spawning strips installed on the outer wall of one side of the separation net. A plurality of breeding spaces are arranged, so that compared with a traditional control single variable experiment in which irrelevant variables of each unit need to be regulated and controlled in different cylinders, the stability is higher.

Description

Technical Field

[0001] The present invention relates to the field of aquaculture, and particularly to an experimental device for studying the influence of a single variable on the reproduction of small fish. Background Art

[0002] In the study of the reproductive behavior of small fish such as medaka and the influence of environmental variables, traditional experiments mostly adopt a control experiment mode with independent tanks. For example, the technical solution disclosed in the patent application No. CN201510123456.7 requires an independent filtration system, which cannot ensure environmental consistency. However, this split-type experimental device has significant defects: First, each experimental unit needs to be independently equipped with a circulating filtration system, resulting in difficult precise synchronous control of environmental parameters such as water temperature, water flow, and dissolved oxygen content, and it is difficult to eliminate the interference of irrelevant variables. Second, there are problems such as difficulty in collecting fish eggs and adult fish swallowing fish eggs during the operation of separating tanks, which affect the reliability of experimental data. Third, traditional isolation devices often adopt a fixed partition design, which cannot flexibly adjust the proportion of the breeding space according to experimental needs, and the water exchange efficiency is low, easily causing local water quality deterioration.

[0003] Although there are some integrated experimental devices in the prior art, their water flow distribution systems adopt a simple equal-sharing pipe structure, which is prone to flow deviation during long-term operation. These technical defects seriously restrict the experimental accuracy and operation convenience of studying the influence of environmental variables on reproductive behavior. Therefore, this solution proposes an experimental device for studying the influence of a single variable on the reproduction of small fish. Summary of the Invention

[0004] An experimental device for studying the influence of a single variable on the reproduction of small fish proposed by the present invention solves the problem that the existing experimental device for the reproduction of small fish needs to separately regulate irrelevant variables.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An experimental device for studying the influence of a single variable on the reproduction of small fish, including a fish tank, characterized in that a plurality of partition components are installed inside the fish tank, and the plurality of partition components divide the inner side of the fish tank into a plurality of breeding spaces. An egg-laying component is detachably installed in the breeding space. An installation plate is provided at the top of the fish tank, and a filtering mechanism for filtering water body is installed on the installation plate;

[0007] The egg-laying component includes a partition net arranged inside the fish tank, a top plate fixed to the top of the partition net, and a plurality of egg-laying strips installed on the outer wall of one side of the partition net. The top plate is clamped with the top of the fish tank;

[0008] The partition component includes a partition slidably connected to the inner side of the fish tank, an inflatable sealing ring installed on both sides and the bottom of the partition, and an adjusting member installed on the top surface of the partition for inflating and deflating the inflatable sealing ring. A plurality of connection grooves for water body to pass through are formed on the front surface of the partition, and an interception net is installed in the connection grooves. A blocking member for blocking the connection grooves is installed on the back surface of the partition.

[0009] The filtering mechanism includes a filtering box installed on the top surface of the mounting plate, a water pumping component for pumping the water in the fish tank into the filtering box, and a drainage component installed on the bottom surface of the mounting plate for respectively conveying the filtered water body into a plurality of breeding spaces.

[0010] Through the above technical solutions, a plurality of breeding spaces are provided, so that it has more stability compared with the traditional method of separately controlling the irrelevant variables of each unit in a single-variable experiment by dividing the tanks. At the same time, the setting of the filtering mechanism can also conveniently and quickly filter the water in a plurality of breeding spaces.

[0011] As a further improvement of the above solution, insertion rods are fixed on both sides of the bottom surface of the top plate, and card holes for inserting the insertion rods are formed on the top surfaces of both sides of the fish tank.

[0012] As a further improvement of the above solution, side plates are fixed on both sides of the partition. The two side plates are respectively located outside the long sides of both sides of the fish tank. Limiting grooves are formed on the long sides of both sides of the fish tank along their length directions. Limiting plates slidably connected to the limiting grooves are fixed on one side of the two side plates close to the fish tank. Disassembly slots for the limiting plates to pass through are formed on the top surfaces of the two limiting grooves.

[0013] As a further improvement of the above solution, the adjusting member includes two elastic air bags installed on the top surface of the partition and a pressing plate fixed to the top surfaces of the two elastic air bags. An adjusting bolt is threadedly connected to the center of the top surface of the pressing plate. A bolt hole for screwing the adjusting bolt is formed in the center of the bottom surface of the partition. The two elastic air bags are respectively located on both sides of the bolt hole, and both elastic air bags are communicated with the inflatable sealing ring.

[0014] As a further improvement of the above solution, installation grooves for installing the inflatable sealing ring are formed on both sides and the bottom of the partition. The outer walls of both sides of the partition are in contact with the inner walls of the long sides of both sides of the fish tank, and the bottom of the partition is in contact with the inner wall of the bottom of the fish tank.

[0015] As a further improvement of the above solution, the blocking member includes two guiding plates fixed to the back surface of the partition and a plurality of sealing plates slidably connected between the two guiding plates and corresponding to the plurality of connection grooves. The sealing plates are located above the corresponding connection grooves and are used to block the connection grooves after they descend. Adjacent two sealing plates are fixed by a connecting plate, and a connecting rod is fixedly connected between the sealing plate closest to the pressing plate and the bottom surface of the pressing plate.

[0016] As a further improvement of the above solution, guide grooves are provided on one side of each of the two guide plates along their lengths, and sliders are fixed at both ends of the sealing plate, and one ends of the two sliders are respectively slidably connected in the two guide grooves.

[0017] As a further improvement of the above solution, a filter screen and a funnel are installed in the filter box. The funnel is located below the filter screen, and a water outlet pipe is installed at the bottom of the water outlet of the funnel. The space below the funnel is a heating cavity, and a heater is installed on one inner wall of the heating cavity. An overflow pipe communicating with the inside of the heating cavity is installed on the outer periphery of the filter box, and the position of the connection point between the overflow pipe and the filter box is higher than the bottom height of the water outlet pipe.

[0018] As a further improvement of the above solution, the drainage assembly includes a fixed pipe fixed to the bottom surface of the mounting plate, a movable pipe movably sleeved on the outer periphery of the fixed pipe, two water guide pipes installed on the outer walls on both sides of the movable pipe, and a plurality of drain pipes installed on the bottom surfaces of the two water guide pipes. The other end of the overflow pipe is fixed and communicated with the fixed pipe. The movable pipe can move along the length direction of the fixed pipe, and a locking bolt for locking itself is threadedly connected to the outer periphery of the movable pipe. The plurality of drain pipes are respectively arranged directly above the plurality of breeding spaces.

[0019] As a further improvement of the above solution, the water pumping assembly includes a water suction pipe installed on the outer wall of the fish tank and a water pump installed on the mounting plate. The water inlet of the water pump is connected to one end of the water suction pipe through a hose, and a water inlet pipe is fixed to the water outlet of the water pump. One end of the water inlet pipe extends to the inside of the filter box and is located above the filter screen. A branch pipe communicating with the water suction pipe is installed at the bottom of one side of the plurality of breeding spaces, and a protective net is installed at the water inlet end of the branch pipe.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. Through the setting of the partition assembly, it can effectively prevent fry from passing through, and the setting of the connection groove can also promote the intercommunication of water flow. At the same time, through the setting of the spawning assembly, it can turn over for breeding after collecting eggs, thereby preventing fish eggs from being swallowed.

[0022] 2. Through the cooperation among the inflatable sealing ring, the adjusting member and the plugging member, the gap between the partition plate and the inner wall of the fish tank 1 can be plugged while sealing the connection groove, thereby avoiding the circulation of water bodies in adjacent breeding spaces.

[0023] 3. Through the setting of the filtering mechanism, it is convenient to pump out the water body in the breeding space from the bottom, so that the feces in the water are more easily pumped out. Then, the water body entering the filter box is filtered and then discharged from the overflow pipe, and finally discharged into each breeding space through the dispersion assembly. The setting of the heating assembly can heat the water body in the heating cavity as needed. Description of the Drawings

[0024] Figure 1 is the structural schematic diagram of the present invention;

[0025] Figure 2 is the structural schematic diagram of the drainage component of the present invention;

[0026] Figure 3 is the structural schematic diagram of the fish tank;

[0027] Figure 4 is the structural schematic diagram of the front side of the partition board and the pressing plate;

[0028] Figure 5 is the structural schematic diagram of the back side of the partition board;

[0029] Figure 6 is the structural schematic diagram of the spawning component;

[0030] Figure 7 is the structural schematic diagram of the spawning component and the partition component inside the fish tank;

[0031] Figure 8 is the structural schematic diagram of the jack;

[0032] Figure 9 is the structural schematic diagram of the inside of the filter box.

[0033] Main symbol description:

[0034] 1. Fish tank; 2. Limit groove; 3. Disassembly and assembly groove; 4. Partition component; 5. Spawning component; 6. Installation shaft; 7. Hose; 8. Suction pipe; 9. Installation plate; 10. Filter box; 11. Cover plate; 12. Water pump; 13. Lighting lamp; 14. Overflow pipe; 15. Fixed pipe; 16. Movable pipe; 17. Water guide pipe; 18. Drain pipe; 19. Card hole; 20. Filter screen; 21. Funnel; 22. Outlet pipe; 23. Heater;

[0035] 401. Pressing plate; 402. Adjusting bolt; 403. Bolt hole; 404. Elastic airbag; 405. Side plate; 406. Limit plate; 407. Partition board; 408. Connection groove; 409. Inflatable sealing ring; 410. Installation groove; 411. Guide groove; 412. Guide plate; 413. Sealing plate; 414. Connection plate;

[0036] 501. Top plate; 502. Spawning strip; 503. Partition net; 504. Insert rod.

[0037] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be combined arbitrarily to form new embodiments.

[0038] Embodiment 1:

[0039] Please combine with Figures 1-9 A research experimental device for the influence of a single variable on the reproduction of small fish in this embodiment includes a fish tank 1. A plurality of partition components 4 are installed inside the fish tank 1, and the plurality of partition components 4 divide the inner side of the fish tank 1 into a plurality of breeding spaces. The partition component 4 includes a partition plate 407 slidably connected to the inner side of the fish tank 1, an inflatable sealing ring 409 installed on both sides and the bottom of the partition plate 407, and an adjusting member installed on the top surface of the partition plate 407 for inflating and deflating the inflatable sealing ring 409. A plurality of connection grooves 408 for water body passage are formed on the front surface of the partition plate 407, and an interception net is installed in the connection grooves 408. A blocking member for blocking the connection grooves 408 is installed on the back surface of the partition plate 407. Through the setting of the partition component, the interior of the fish tank 1 can be divided into different breeding spaces, so as to avoid interference between medaka in different breeding spaces. The setting of the connection grooves 408 can not only prevent medaka from flowing between multiple breeding spaces, but also ensure the circulation of the water body in the fish tank 1.

[0040] The adjusting member includes two elastic air bags 404 mounted on the top surface of the partition plate 407 and a pressing plate 401 fixedly connected to the top surfaces of the two elastic air bags 404. A regulating bolt 402 is threadedly connected to the center of the top surface of the pressing plate 401. A bolt hole 403 for screwing the regulating bolt 402 is provided at the center of the bottom surface of the partition plate 407. The two elastic air bags 404 are respectively located on both sides of the bolt hole 403, and both elastic air bags 404 are communicated with the inflatable sealing ring 409. Installation grooves 410 for installing the inflatable sealing ring 409 are provided on both sides and the bottom of the partition plate 407. The outer walls on both sides of the partition plate 407 are abutted against the inner walls of the two long sides of the fish tank 1, and the bottom of the partition plate 407 is abutted against the inner wall of the bottom of the fish tank 1. The blocking member includes two guiding plates 412 fixed to the back surface of the partition plate 407 and a plurality of sealing plates 413 slidably connected between the two guiding plates 412 and correspondingly arranged with a plurality of connecting grooves 408. The sealing plates 413 are located above the corresponding connecting grooves 408 and are used to block the connecting grooves 408 after they descend. Adjacent two sealing plates 413 are fixed by a connecting plate 414. Among them, one sealing plate 413 closest to the pressing plate 401 is fixedly connected to the bottom surface of the pressing plate 401 through a connecting rod. The length and width of the sealing plate 413 are respectively larger than the length and width of the connecting groove 408. The arrangement of the blocking member and the adjusting member facilitates completely isolating two adjacent breeding spaces, thereby avoiding the circulation of water bodies in two adjacent breeding spaces. During adjustment, the regulating bolt 402 is rotated in the clockwise direction, thereby pressing the pressing plate 401 to descend. The elastic air bag 404 is compressed by the pressing plate 401 accordingly. The air in the elastic air bag 404 is pressed into the inflatable sealing ring 409, and the inflatable sealing ring 409 expands accordingly, thereby blocking the gap between the outer periphery of the partition plate 407 and the inner wall of the fish tank 1. At the same time, during the descent of the pressing plate 401, a plurality of sealing plates 413 are driven to descend, and the sealing plates 413 block the connecting grooves 408 below them during the descent process, thereby achieving the purpose of isolating two adjacent breeding spaces.

[0041] A spawning assembly 5 is detachably installed in the breeding space. The spawning assembly 5 includes a partition net 503 arranged inside the fish tank 1, a top plate 501 fixed to the top of the partition net 503, and a plurality of spawning strips 502 installed on one outer wall of the partition net 503. The outer walls on both sides of the partition net 503 are respectively abutted against the inner walls of both sides of the fish tank 1. The top plate 501 is snap-connected to the top of the fish tank 1. Plug rods 504 are fixed to both sides of the bottom surface of the top plate 501. Card holes 19 for inserting the plug rods 504 are provided on both sides of the top surface of the fish tank 1. When placing the spawning assembly, the plug rods 504 on the bottom surface of the top plate 501 are correspondingly inserted into the card holes 19. After the top plate 501 falls on the top surface of the fish tank 1, the bottom surface of the partition net 503 is also abutted against the inner wall of the bottom of the fish tank 1. When the medaka spawns, it will wind the eggs around the spawning strips 502. After spawning is completed, the partition net 503 is pulled out of the breeding space, rotated, and then placed back into the original breeding space, so as to avoid the adult medaka swallowing the fish eggs.

[0042] In this embodiment, side plates 405 are fixed to both sides of the partition plate 407. The two side plates 405 are respectively located outside the two long sides of the fish tank 1. Limiting grooves 2 are provided along the length direction on the two long sides of the fish tank 1. Limiting plates 406 that are slidably connected to the limiting grooves 2 are fixed to one side of the two side plates 405 close to the fish tank 1. Disassembly and assembly grooves 3 for the limiting plates 406 to pass through are provided on the top surfaces of the two limiting grooves 2. The arrangement of the limiting grooves 2 and the limiting plates 406 ensures that the size of the gap between the outer periphery of the partition plate 407 and the inner wall of the fish tank 1 does not change during the movement of the partition plate 407. The arrangement of the disassembly and assembly grooves 3 facilitates the entry of the limiting plates 406 into the limiting grooves 2 through the disassembly and assembly grooves 3 when the partition plate 407 is placed inside the fish tank 1.

[0043] In this embodiment, installation grooves 410 for installing inflatable sealing rings 409 are provided on both sides and the bottom of the partition plate 407. The outer walls on both sides of the partition plate 407 are in contact with the inner walls of the two long sides of the fish tank 1, and the bottom of the partition plate 407 is in contact with the inner wall of the bottom of the fish tank 1. The installation grooves 410 are provided for accommodating the inflatable sealing rings 409, thereby preventing the gap between the edge of the partition plate 407 and the inner wall of the fish tank 1 from being too large when the inflatable sealing rings 409 are not inflated.

[0044] In this embodiment, guiding grooves 411 are provided along the length direction on the opposite sides of the two guiding plates 412. Sliders are fixed to both ends of the sealing plate 413. One ends of the two sliders are respectively slidably connected to the two guiding grooves 411. The side of the sealing plate 413 close to the partition plate 407 is in contact with its surface. The arrangement of the guiding grooves 411 and the sliders ensures the tight contact between the sealing plate 413 and the partition plate 407, so that the connection groove 408 can be blocked after the sealing plate 413 descends.

[0045] Embodiment 2:

[0046] Combined with Figure 1 、 Figure 2 and Figure 9 , on the basis of Embodiment 1, the further improvement of this embodiment is that: an installation plate 9 is provided on the top of the fish tank 1. A filtering mechanism for filtering the water body is installed on the installation plate 9. The filtering mechanism includes a filtering box 10 installed on the top surface of the installation plate 9, a water pumping component for pumping the water in the fish tank 1 into the filtering box 10, and a drainage component installed on the bottom surface of the installation plate 9 and used for respectively delivering the filtered water body to multiple culture spaces. A filter screen 20 and a funnel 21 are installed in the filtering box 10. The funnel 21 is located below the filter screen 20, and a water outlet pipe 22 is installed at the bottom of the funnel outlet. The top surface of the filtering box 10 is an open structure, and a cover plate 11 for sealing its top is provided on the top surface of the filtering box 10. The cover plate 11 is locked to the filtering box 10 through a lock. After the cover plate 11 is opened, it is convenient to clean the impurities filtered on the top surface of the filter screen 20.

[0047] The space below the funnel 21 is the heating chamber. A heater 23 is installed on one inner wall of the heating chamber. An overflow pipe 14 communicating with the inside of the heating chamber is installed on the outer periphery of the filter box 10, and the position of the connection point of the overflow pipe 14 and the filter box 10 is higher than the bottom height of the water outlet pipe 22. The water pumping assembly pumps the water in the fish tank 1 into the filter box 10 for filtration by using the filter screen 20. After filtration, the water is discharged into the heating chamber through the water outlet pipe 22. When the water level in the heating chamber exceeds the connection point of the overflow pipe 14 and the filter box 10, the water in the heating chamber will be discharged from the overflow pipe 14 and then re-enter the fish tank 1 through the drainage assembly, thus completing the purification of the water body in the fish tank 1. The setting of the heater 23 can heat the water body in the heating chamber by starting the heater 23 when the water body needs to be heated. The bottom height of the water outlet pipe 22 being at the height of the connection point of the overflow pipe 14 and the filter box 10 allows the water body to stay in the heating chamber for a longer time, facilitating sufficient heating of the water body.

[0048] The drainage assembly includes a fixed pipe 15 fixedly connected to the bottom surface of the mounting plate 9, a movable pipe 16 movably sleeved on the outer periphery of the fixed pipe 15, two water guide pipes 17 installed on the outer walls of both sides of the movable pipe 16, and a plurality of drain pipes 18 installed on the bottom surfaces of the two water guide pipes 17. The other end of the overflow pipe 14 is fixedly connected and communicated with the fixed pipe 15. The movable pipe 16 can move along the length direction of the fixed pipe 15, and a locking bolt for locking itself is threadedly connected to the outer periphery of the movable pipe 16. One end of the locking bolt abuts against the outer periphery of the fixed pipe 15, thereby locking the movable pipe 16 by using the frictional force between it and the fixed pipe 15. The plurality of drain pipes 18 are respectively arranged directly above the plurality of breeding spaces. The water body discharged from the overflow pipe 14 enters the fixed pipe 15 and then enters the movable pipe 16, and then is dispersed from the movable pipe 16 into the two water guide pipes 17. Finally, the water in the water guide pipes 17 is discharged from the drain pipes 18 and enters the plurality of breeding spaces respectively, thus ensuring sufficient exchange of the water body in each breeding space. To avoid the drainage assembly interfering with the movement or adjustment of the partition assembly 4 or the spawning assembly 5, the locking bolt can be loosened and then the movable pipe 16 can be lifted, thereby raising the water guide pipes 17 and the drain pipes 18 to move them above the partition assembly 4 or the spawning assembly 5, thus eliminating the interference.

[0049] The water pumping assembly includes a water suction pipe 8 installed on the outer wall of the fish tank 1 and a water pump 12 installed on the mounting plate 9. The water inlet of the water pump 12 is connected to one end of the water suction pipe 8 through a hose 7. A water inlet pipe is fixed to the water outlet of the water pump 12, and one end of the water inlet pipe extends to the inside of the filter tank 10 and is located above the filter screen 20. Branch pipes communicating with the water suction pipe 8 are installed at the bottom of one side of multiple breeding spaces, and a protective net is installed at the water inlet end of the branch pipes. The setting of the protective net can avoid fish being sucked into the branch pipes while ensuring that feces and impurities can pass through. Setting the branch pipes at the bottom of the breeding space can facilitate the suction of feces and other impurities settled at the bottom of the breeding space into the branch pipes.

[0050] In this embodiment, a mounting shaft 6 is rotatably connected to one side of the fish tank 1, the mounting plate 9 is fixedly connected to the top of the mounting shaft 6, and two lighting lamps 13 are installed on the bottom surface of the mounting plate 9. The two lighting lamps 13 are respectively arranged on both sides of the fixed pipe 15. The lighting lamps 13 can provide light when needed. During the breeding process, when the light needs to be controlled, the partition assembly or the tank body can be made of black materials, or a black film can be pasted on the outer surface of the tank body 1 or the partition assembly. When disassembling and assembling the partition assembly 4 or the spawning assembly 5, after moving the water guide pipe 17 and the drain pipe 18 above the partition assembly 4 or the spawning assembly 5, the mounting shaft 6 can be rotated to make the mounting plate 9 deviate from directly above the fish tank 1, thereby eliminating the obstruction above the partition assembly 4 or the spawning assembly 5, and the folding operation is more convenient.

[0051] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. An experimental device for studying the influence of a single variable on the reproduction of small fish, including an aquarium, characterized in that, A plurality of partition components are installed inside the fish tank, and the plurality of partition components divide the inner side of the fish tank into a plurality of breeding spaces. An egg-laying component is detachably installed in the breeding space. A mounting plate is provided at the top of the fish tank, and a filtering mechanism for filtering water body is installed on the mounting plate; The egg-laying component includes a partition net arranged inside the fish tank, a top plate fixed to the top of the partition net, and a plurality of egg-laying strips installed on the outer wall of one side of the partition net. The top plate is clamped with the top of the fish tank; The partition component includes a partition plate slidably connected inside the fish tank, an inflatable sealing ring installed on both sides and the bottom of the partition plate, and an adjusting member installed on the top surface of the partition plate for inflating and deflating the inflatable sealing ring. A plurality of connection grooves for water body to pass through are formed on the front surface of the partition plate, and an intercepting net is installed in the connection grooves. A blocking member for blocking the connection grooves is installed on the back surface of the partition plate; The filtering mechanism includes a filtering box installed on the top surface of the mounting plate, a water pumping component for pumping the water in the fish tank into the filtering box, and a drainage component installed on the bottom surface of the mounting plate for respectively conveying the filtered water body into a plurality of breeding spaces.

2. The experimental device for studying the influence of a single variable on the reproduction of small fish according to claim 1, wherein Insertion rods are fixed to both sides of the bottom surface of the top plate, and card holes for inserting the insertion rods are formed on both sides of the top surface of the fish tank.

3. An experimental device for studying the influence of a single variable on the reproduction of small fish according to claim 1, characterized in that, Side plates are fixed to both sides of the partition plate. The two side plates are respectively located outside the two long sides of the fish tank. Limiting grooves are formed on both long sides of the fish tank along the length direction thereof. Limiting plates slidably connected to the limiting grooves are fixed to one side of the two side plates close to the fish tank. Disassembly and assembly grooves for the limiting plates to pass through are formed on the top surfaces of the two limiting grooves.

4. An experimental device for studying the influence of a single variable on the reproduction of small fish according to claim 1, characterized in that, The adjusting member includes two elastic air bags installed on the top surface of the partition plate and a pressing plate fixed to the top surfaces of the two elastic air bags. A regulating bolt is threadedly connected to the center of the top surface of the pressing plate. A bolt hole for screwing the regulating bolt is formed in the center of the bottom surface of the partition plate. The two elastic air bags are respectively located on both sides of the bolt hole, and both elastic air bags are communicated with the inflatable sealing ring.

5. An experimental device for studying the influence of a single variable on the reproduction of small fish according to claim 1, characterized in that, Mounting grooves for installing the inflatable sealing ring are formed on both sides and the bottom of the partition plate. The outer walls of both sides of the partition plate are in contact with the inner walls of the two long sides of the fish tank, and the bottom of the partition plate is in contact with the inner wall of the bottom of the fish tank.

6. An experimental device for studying the influence of a single variable on the reproduction of small fish according to claim 4, characterized in that, The blocking member includes two guiding plates fixed to the back surface of the partition plate and a plurality of sealing plates slidably connected between the two guiding plates and corresponding to the plurality of connection grooves. The sealing plates are located above the corresponding connection grooves and are used for blocking the connection grooves after descending. Adjacent two sealing plates are fixed through a connecting plate, and one of the sealing plates closest to the pressing plate is fixedly connected to the bottom surface of the pressing plate through a connecting rod.

7. An experimental device for studying the influence of a single variable on the reproduction of small fish according to claim 6, characterized in that, Guide grooves are formed on the opposite sides of the two guiding plates along the length direction thereof. Sliding blocks are fixed to both ends of the sealing plate, and one ends of the two sliding blocks are respectively slidably connected to the two guide grooves.

8. An experimental device for studying the influence of a single variable on the reproduction of small fish according to claim 1, characterized in that, A filter screen and a funnel are installed in the filter box. The funnel is located below the filter screen, and a water outlet pipe is installed at the bottom of the water outlet of the funnel. The space below the funnel is a heating chamber, and a heater is installed on one inner wall of the heating chamber. An overflow pipe communicated with the inside of the heating chamber is installed on the outer periphery of the filter box, and the position of the connection point of the overflow pipe and the filter box is higher than the bottom height of the water outlet pipe.

9. An experimental device for studying the influence of a single variable on the reproduction of small fish according to claim 8, characterized in that, The drainage assembly includes a fixed pipe fixedly connected to the bottom surface of the mounting plate, a movable pipe movably sleeved on the outer periphery of the fixed pipe, two water guide pipes installed on the outer walls of both sides of the movable pipe, and a plurality of drain pipes installed on the bottom surfaces of the two water guide pipes. The other end of the overflow pipe is fixedly connected and communicated with the fixed pipe. The movable pipe can move along the length direction of the fixed pipe, and a locking bolt for locking itself is threadedly connected to the outer periphery of the movable pipe. The plurality of drain pipes are respectively arranged directly above the plurality of breeding spaces.

10. An experimental device for studying the influence of a single variable on the reproduction of small fish according to claim 8, characterized in that, The pumping assembly includes a water suction pipe installed on the outer wall of the fish tank and a water pump installed on the mounting plate. The water inlet of the water pump is connected to one end of the water suction pipe through a hose. A water inlet pipe is fixed at the water outlet of the water pump, and one end of the water inlet pipe extends to the inside of the filter tank and is located above the filter screen. A branch pipe communicated with the water suction pipe is installed at the bottom of one side of each of the plurality of breeding spaces, and a protective net is installed at the water inlet end of the branch pipe.

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