An indoor breeding device and method of the red grouper epinephelus akaara
By using LED lights for illumination control and pumping components to simulate water flow in the red snapper farming device, the impact of insufficient light on growth and development was solved, achieving efficient farming of red snapper, increasing yield and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-27
- Publication Date
- 2026-07-17
AI Technical Summary
Existing intensive farming methods for red snapper do not specifically design for lighting conditions, which affects their growth, development, and yield, resulting in high production costs.
By setting up LED lights to control specific light colors and combining them with pumping components to simulate natural water flow, an indoor aquaculture device for red snapper was designed to optimize light and water quality.
It improved the growth rate and yield of red snapper, reduced stress response, decreased feed costs, and improved the stability and economic benefits of aquaculture.
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Figure CN122397667A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of recirculating aquaculture technology, specifically to an indoor aquaculture device and method for red snapper. Background Technology
[0002] The red spiny sea bass (Cephalopholis sonnerati) is an economically important marine fish species. Its bright red coloration, tender flesh, and delicious flavor make it a newly emerging aquaculture species. In intensive aquaculture, light is a key environmental factor that significantly impacts the fish's behavior, feeding habits, growth, and reproduction.
[0003] Currently, intensive farming methods for red snapper simply involve controlling basic aquaculture conditions such as water temperature and salinity. However, light-controlled aquaculture can improve growth rate and feed conversion ratio, and reduce stress in fish through specific light color applications. For example, the article "Red Snapper (Red Spotted Sea Bass) Achieves Breakthrough in Artificial Aquaculture Technology, New Variety Leads New Direction for Wanning Fishery Development" states that "the workshop adopts the most advanced domestic circulating water treatment and aquaculture system, which can achieve automatic water replenishment, automatic sewage discharge, automatic temperature control, automatic feeding, and automatic monitoring." This indicates that it uses a temperature-controlled aquaculture model and does not address the specific design of light conditions in the aquaculture environment. It ignores the impact of light on the growth and development of red snapper. Given the current high market price and production cost of red snapper, light-controlled aquaculture, by increasing low-cost electricity and equipment investment to improve the growth performance and survival rate of red snapper, can enhance the overall profitability of fish and increase red snapper production.
[0004] Therefore, the drawback of the existing technology is that it only controls some simple aquaculture conditions such as water temperature and salinity, without integrating the regulation of the light environment, which may affect the yield of red snapper. Therefore, it is necessary to propose a device and method that can improve the yield of red snapper by adjusting the light conditions. Summary of the Invention
[0005] To address the aforementioned problems, this invention provides an indoor aquaculture device and method for red-spined perch. This method utilizes a light-controlled aquaculture approach to specifically design the light conditions required by the red-spined perch. Specific color LED lights are used to promote normal growth and development, thereby improving aquaculture results. Simultaneously, a pumping component can pump water from the culture tank, creating water flow that simulates natural water flow, making the aquaculture environment more realistic and reducing stress on the fish fry.
[0006] To achieve the above objectives, the technical solution of the present invention is as follows: An indoor breeding device for red snapper includes a controller and a breeding tank. A support plate is symmetrically fixedly connected to the top of the breeding tank. A drive component is fixedly connected to one side of the support plate. The controller controls the opening and closing of the drive component. A rotating rod is fixedly connected to the output shaft of the drive component through the adjacent support plate. A feeding component for dispensing feed is provided on the rotating rod. A light color adjustment component for providing illumination to the inside of the breeding tank is provided on the inner wall of the breeding tank. A gear is coaxially fixedly connected to one end of the rotating rod away from the output shaft of the drive component, extending through the adjacent support plate to one side of the support plate. The gear rotates and engages with one side of the support plate, and meshes with a rack. A limiting component for limiting the rack is provided on one side of the outer wall of the breeding tank. A purification component for water purification is provided at the lower part of the outer wall of the breeding tank. A pumping component for pumping water from the breeding tank into the purification component is provided at the bottom end of the rack.
[0007] The technical principles of the above solution are as follows:
[0008] Workers fill the rearing tanks with water and place red snapper fry inside. They then add feed to the feeding assembly. A controller operates the light and color adjustment assembly, simultaneously rotating the output shaft of the drive unit, which in turn drives a rotating rod and gears. During this process, the rotating rod drives the feeding assembly to release feed in batches. Simultaneously, the gears, while rotating, cause a rack to move vertically under the control of a limiting component. This rack, in turn, drives a pumping assembly to draw water from the rearing tanks to a purification assembly. The purification assembly then purifies the water and releases it back into the rearing tanks.
[0009] The above approach has the following beneficial effects:
[0010] 1. This invention provides specific lighting conditions for red snapper by setting a light and color adjustment component on the inner wall of the breeding tank, thereby promoting its growth and development and improving the breeding effect.
[0011] 2. This invention drives the rotating rod and gear to rotate sequentially through the output shaft of the drive component. The gear drives the rack to move vertically, thereby simultaneously driving the feeding component and the pumping component to operate. The feeding component feeds the feed in batches multiple times to reduce the situation where too much feed is fed at once, resulting in insufficient feed utilization. At the same time, the pumping component can also pump water in the breeding tank, creating water flow in the breeding tank, simulating the water flow in the natural environment, making the breeding environment closer to reality.
[0012] 3. This invention achieves a self-circulating purification operation of water by releasing the water drawn in by the pumping component back into the aquaculture tank through the purification component. Staff can judge the pollution level of the water by observing the purification status of the purification component, thereby ensuring water quality safety and improving the stability and reliability of aquaculture.
[0013] Furthermore, the feeding assembly includes a feeding box fixedly connected to one side of one of the support plates. A feeding disc is rotatably fitted to the inner side wall of the feeding box. A rotating rod coaxially passes through the feeding box and the feeding disc, extends to one side of the feeding box, and is fixedly connected to the feeding disc. A feeding groove is opened on the feeding disc. A feed inlet is opened at the top of the feeding box, and a discharge outlet is opened at the bottom of the feeding box. A feed cylinder is fixedly connected to the feed inlet, and a solenoid valve is connected to the discharge outlet. A controller is used to control the opening and closing of the solenoid valve.
[0014] Beneficial effects: When the rotating rod drives the feeding tray to rotate, the feeding trough will pass through the inlet and outlet in sequence. At this time, by controlling the rotation angle of the feeding tray, the amount of feed entering the feeding trough each time can be precisely controlled, thereby realizing quantitative feeding and improving the utilization rate of feed.
[0015] Furthermore, the light color adjustment component includes several LED lights fixedly connected to the inner wall of the breeding tank, and the controller is used to control the LED lights to adjust different light colors.
[0016] Beneficial effects: By controlling the specific color of light emitted by LED lights, the farming conditions for red snapper can be adjusted, reducing the possibility of stress reactions in red snapper caused by unsuitable lighting.
[0017] Furthermore, the limiting component includes a limiting frame fixedly connected to the outer wall of the breeding tank, and a rack located inside the limiting frame and vertically slidingly engaged with the inner wall of the limiting frame.
[0018] Beneficial effects: By limiting the movement path of the rack using the limit frame, the rack's offset during movement can be reduced, thereby increasing the stability of the device.
[0019] Furthermore, the pumping assembly includes a pumping box that is fixedly connected to and communicates with the outer wall of the breeding tank. A liquid inlet check valve is connected to the connection point. A pumping plate is vertically slidably fitted on the inner wall of the pumping box. The bottom end of the rack extends through the top wall of the pumping box and into the pumping box, where it is fixedly connected to the top of the pumping plate.
[0020] Beneficial effects: When pumping water, the pumping component can achieve directional flow of water to simulate water flow in the natural environment, making the aquaculture environment closer to reality.
[0021] Furthermore, the purification component includes a purification box detachably connected to the outer wall of the breeding tank. A one-way valve for liquid discharge is connected to the lower part of the side wall of the breeding tank, and the purification box is connected to the inside of the breeding tank through the one-way valve for liquid discharge. A liquid delivery pipe is connected to the top of the purification box, and the liquid delivery pipe is connected to the inside of the pumping box. The purification box is filled with PP cotton.
[0022] Beneficial effects: Due to the porous structure of PP cotton, impurities in the water can be intercepted and adsorbed when water passes through it, thus achieving water purification. Furthermore, the detachable design of the purification tank allows for the replacement of different sizes of tanks according to water purification needs, thereby improving the flexibility of the device.
[0023] Furthermore, an indoor culture method for red snapper involves controlling the water temperature in the culture device between 23-27℃, the pH value of the water between 7.5-8.2, and the salinity between 27-30. Continuous aeration is performed on the water to maintain the dissolved oxygen level above 5.8 mg / L. The LED lights are adjusted to a medium 65 watt yellow light and illumination is provided during the day from 12:00-18:00 and at night from 24:00-6:00.
[0024] Beneficial effects: The use of light-controlled aquaculture promoted feeding in red-spotted perch, increased their weight gain rate, accelerated their growth, and improved yield. A suitable lighting environment can reduce the feed conversion ratio, thereby lowering feed costs in aquaculture.
[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0026] Figure 1 This is an isometric schematic diagram of an embodiment of the indoor breeding device for red snapper of the present invention;
[0027] Figure 2 This is a cross-sectional schematic diagram of the feeding component in an embodiment of the indoor breeding device for red snapper of the present invention;
[0028] Figure 3 This is a cross-sectional schematic diagram of the pumping component in an embodiment of the indoor aquaculture device for red sea bass of the present invention.
[0029] The reference numerals in the accompanying drawings of the instruction manual include: 1. Breeding tank; 2. Support plate; 3. Rotating rod; 4. Feeding box; 5. Feeding tray; 6. Feeding cylinder; 7. Solenoid valve; 8. LED light; 9. Gear; 10. Rack; 11. Limiting frame; 12. Extraction box; 13. Inlet check valve; 14. Extraction plate; 15. Purification box; 16. Outlet check valve; 17. Liquid delivery pipe; 18. Stepper motor. Detailed Implementation
[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.
[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0033] The following detailed description illustrates the specific implementation method:
[0034] Example 1:
[0035] As attached Figure 1 The diagram shows an indoor aquaculture device for red snapper, comprising a controller and a rearing tank 1. A support plate 2 is integrally formed symmetrically on the top of the rearing tank 1. A drive component is bolted to one side of the support plate 2, and the controller controls the opening and closing of the drive component. A rotating rod 3 is bolted through the output shaft of the drive component and connected to the adjacent support plate 2. A feeding component for dispensing feed is mounted on the rotating rod 3. A light color adjustment component is provided on the inner wall of the rearing tank 1 for setting a specific light color inside the tank. In this embodiment, a stepper motor 18 is used as the drive component.
[0036] like Figure 2As shown, the feeding assembly includes a feeding box 4 welded to one side of one of the support plates 2. A feeding tray 5 is rotatably fitted to the inner wall of the feeding box 4. A rotating rod 3 coaxially passes through the feeding box 4 and the feeding tray 5, extends to one side of the feeding box 4, and is fixedly engaged with the feeding tray 5. A feeding groove is opened on the feeding tray 5. A feed inlet is opened at the top of the feeding box 4, and a discharge outlet is opened at the bottom of the feeding box 4. A feed cylinder 6 is integrally formed at the feed inlet, and a solenoid valve 7 is connected to the discharge outlet. A controller is used to control the opening and closing of the solenoid valve 7.
[0037] Specifically, the staff fills the rearing tank 1 with water, and after filling, places the red snapper fry into the tank 1. Then, the controller controls the output shaft of the stepper motor 18 to rotate, causing it to drive the rotating rod 3, which is bolted to it, to rotate as well. Since the rotating rod 3 and the feeding tray 5 are coaxially fixed and locked, the rotating rod 3 drives the feeding tray 5 to rotate within the feeding box 4, allowing the feed trough to pass through the inlet and outlet sequentially. The staff then places the feed into the feed cylinder 6, at which point the feeding trough transfers the feed from the feed cylinder 6 to the outlet, thus achieving batch feeding and improving feed utilization.
[0038] like Figure 1 As shown, the light color adjustment component includes several LED lights 8 embedded in the inner wall of the breeding tank 1, and the controller is used to control the LED lights 8 to adjust different light colors.
[0039] Specifically, staff control the LED lights 8 via a controller and adjust the lighting conditions of the LED lights 8 according to the growth needs of the red snapper, using specific light colors to reduce stress on the fry or promote growth. In this process, if the specific light color is inappropriate, it may interfere with the fry's physiological rhythms and visual perception, leading to abnormal behavior and increasing their stress response. Therefore, choosing a suitable light color is crucial for reducing stress during fry rearing and promoting growth.
[0040] like Figure 1 As shown, the end of the rotating rod 3 away from the output shaft of the drive unit extends through the adjacent support plate 2 and is coaxially fixed to one side of the support plate 2 with a gear 9. The gear 9 rotates and engages with one side of the support plate 2. The gear 9 meshes with a rack 10. A limiting component for limiting the rack 10 is provided on one side of the outer wall of the breeding tank 1. The limiting component includes a limiting frame 11 welded to the outer wall of the breeding tank 1. The rack 10 is located inside the limiting frame 11 and slides vertically with the inner side wall of the limiting frame 11.
[0041] Specifically, during rotation, the rotating rod 3 also drives the gear 9, which is coaxially and fixedly engaged with it, to rotate. The gear 9 then drives the rack 10 to move vertically. During this process, since the rack 10 is located within the limiting frame 11 and is vertically slidingly engaged with the limiting frame 11, the rack 10 can be limited by the limiting frame 11, thereby reducing the offset of the rack 10 during vertical movement and improving the stability of the device.
[0042] The lower part of the outer wall of the breeding tank 1 is provided with a purification component for water purification operation, and the bottom end of the rack 10 is provided with a pumping component for pumping the water in the breeding tank 1 into the purification component.
[0043] like Figure 3 As shown, the pumping assembly includes a pumping box 12 welded to and connected to the outer wall of the breeding tank 1, with a liquid inlet check valve 13 connected at the connection point. A pumping plate 14 is vertically slidably fitted on the inner wall of the pumping box 12. The bottom end of the rack 10 extends through the top wall of the pumping box 12 and into the pumping box 12, forming an integral part with the top of the pumping plate 14.
[0044] Specifically, during its vertical movement, the rack 10 also drives the integrally formed pumping plate 14 to slide vertically back and forth within the pumping box 12. Water from the rearing tank 1 is drawn into the pumping box 12 via the one-way inlet valve 13. This causes the water in the rearing tank 1 to flow, simulating real-world water flow. During this process, the directional nature of natural water flow helps the fish fry adapt more effectively to the dynamic water flow environment. If the rearing water flow remains still, it disrupts the fish fry's sense of balance, increasing their stress response. Therefore, by simulating real-world water flow, the stress response of the red snapper fry can be further reduced.
[0045] like Figure 3 As shown, the purification assembly includes a purification box 15 that is detachably bolted to the outer wall of the breeding tank 1. A liquid outlet check valve 16 is connected to the lower part of the side wall of the breeding tank 1. The purification box 15 is connected to the inside of the breeding tank 1 through the liquid outlet check valve 16. A liquid delivery pipe 17 is connected to the purification box 15. The liquid delivery pipe 17 is connected to the inside of the pumping box 12. The purification box 15 is filled with PP cotton.
[0046] Specifically, since the delivery pipe 17 is connected to both the purification tank 15 and the extraction tank 12, when the extraction plate 14 moves downward, the water in the extraction tank 12 can enter the purification tank 15 through the delivery pipe 17 under the pressure of the extraction plate 14. At this time, PP cotton blocks and adsorbs impurities in the water, thereby achieving the effect of purifying the water quality. At the same time, since the water is continuously input into the purification tank 15, and the purification tank 15 is connected to the inside of the breeding tank 1 through the discharge check valve 16, the purified water can be released back into the breeding tank 1 through the discharge check valve 16, completing the water circulation operation.
[0047] This invention employs a light-controlled aquaculture method to specifically design the light conditions required by the red snapper. By setting specific light conditions using LED lights, it can promote normal growth and development, thereby improving aquaculture results. Simultaneously, the pumping component can also pump water from the culture tank, creating water flow that simulates natural water flow, making the culture environment more realistic and reducing stress on the fish fry.
[0048] Example 2:
[0049] The difference from Example 1 is that an indoor culture method for red snapper is used, in which the water temperature in the culture device of Example 1 is controlled between 23-27℃, the pH value of the water is between 7.5-8.2, the salinity of the water is maintained between 27-30, and the water is continuously aerated to keep the dissolved oxygen content above 5.8mg / L; the LED lamp 8 is adjusted to a medium 65 watt yellow light and is used for lighting treatment during the day from 12:00-18:00 and at night from 24:00-6:00.
[0050] In this embodiment, the above-mentioned light color conditions are experimentally verified:
[0051] Specifically, Experiment 1 verifies the following:
[0052] Prepare several aquaculture devices, fill each of the aquaculture tanks with water, control the water temperature between 23-27℃, the pH value between 7.5-8.2, and the salinity between 27-30, and continuously aerate the water to keep the dissolved oxygen content above 5.8mg / L.
[0053] Four different light treatment groups were set up: red light (λ625~740nm), blue light (λ450~455nm), green light (λ525~530nm), and yellow light (λ590~595nm). The light sources were installed 0.5m below the water surface. Lighting was applied during the day (12:00-18:00) and at night (24:00-6:00). The different light treatment groups were separated by blackout cloth to prevent cross-interference between the light sources. A control group with the color adjustment component turned off was also set up, with no light applied.
[0054] The treatment groups were all set with a specific photoperiod (12L:12D) and a specific light intensity (100 watts). Each group was planned to have 3 replicates, and the control group was also planned to have 3 replicates, for a total of 15 replicates.
[0055] Thirty red snapper with an average weight of approximately 200g were randomly placed in each rearing unit and reared for 30-60 days using a 24-hour flow-through system. At 10:30 AM daily, feed was added to the feeding component in the rearing unit to provide a full feeding of the fry, with the feed amount being 2.5% of the fish's total body weight. Thirty minutes after feeding, a bottom-sucking operation was performed in rearing unit 1 to remove uneaten feed and feces from the water.
[0056] The breeding results are shown in Table 1:
[0057] Table 1 Comparison of Aquaculture Results
[0058] Group control group Red light group Blu-ray group Green light group Huang Guang Group Weight gain / g 38.63 24.57 10.77 47.86 105.93 Feed conversion ratio 6.89 11.00 20.12 5.46 3.12 Survival rate 100％ 100％ 100％ 100％ 100％
[0059] As shown in Table 1, compared with the control group, both the yellow light group and the green light group can promote the growth and development of fish fry, and the yellow light group has the best effect.
[0060] Specifically, Experiment 2 verifies the following:
[0061] Prepare several aquaculture devices, fill each of the aquaculture tanks with water, control the water temperature in the aquaculture device between 23-27℃, the pH value of the water between 7.5-8.2, and the salinity of the water between 27-30, and continuously aerate the water to keep the dissolved oxygen content above 5.8mg / L.
[0062] Three lighting treatment groups were set up, all using yellow light, with light intensities of 25 watts, 65 watts, and 100 watts respectively. The light sources were installed 0.5 meters below the water surface. Lighting was applied during the day (12:00-18:00) and at night (24:00-6:00). The different lighting treatment groups were separated by blackout cloth to prevent cross-interference between the light sources. A control group with the color temperature adjustment component turned off was also set up, receiving no light.
[0063] All treatment groups were fitted with a specific photoperiod (12L:12D), with three replicates in each experimental group and three replicates in the control group. Fish were fed once daily at 10:30 AM after a full meal. The daily feed weight was calculated as 2.5% of the total fish mass in each rearing device. Uneaten feed and feces were removed by suctioning the bottom 30 minutes after feeding. Thirty red snapper (average weight approximately 200g) were randomly placed in each rearing device, and the experiment lasted 30 days.
[0064] The breeding results are shown in Table 2:
[0065] Table 2 Comparison of Aquaculture Results
[0066] Group control group 25W yellow light group 65W yellow light group 100W yellow light group Weight gain / g 11.39 13.38 26 19.5 Feed conversion ratio 4.67 3.97 2.04 2.72 Survival rate 90％ 100％ 100％ 100％
[0067] Table 2 shows that the 65-watt medium light intensity in the yellow light group had the best effect on promoting the weight gain of the red snapper; the 65-watt yellow light group had the lowest feed conversion ratio, requiring the least amount of feed for weight gain; compared with the control group, the feed conversion ratio of the yellow light group was reduced. In terms of survival rate, yellow light can reduce fish stress and improve their survival rate.
[0068] In summary, this invention utilizes light-controlled aquaculture to promote feeding in red snapper, increase their weight gain rate, accelerate their growth, and improve yield. The suitable lighting environment provided by this invention can reduce the feed conversion ratio and feed costs. Furthermore, the suitable lighting environment can alleviate fish stress, reduce stress caused by environmental changes and fish fighting, and minimize economic losses.
[0069] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. An indoor breeding device for red snapper, comprising a breeding tank (1), wherein support plates (2) are symmetrically fixedly connected to the top of the breeding tank (1), characterized in that, It also includes a controller, a drive unit is fixedly connected to one side of the support plate (2), the controller is used to control the opening and closing of the drive unit, the output shaft of the drive unit passes through the support plate (2) adjacent to it and is fixedly connected to a rotating rod (3), a feeding component for feeding bait is provided on the rotating rod (3), and a light color adjustment component for setting a specific light color inside the breeding bucket (1) is provided on the inner wall of the breeding bucket (1). The end of the rotating rod (3) away from the output shaft of the drive unit passes through the adjacent support plate (2) and extends to one side of the support plate (2) where a gear (9) is coaxially fixed. The gear (9) rotates and engages with one side of the support plate (2). The gear (9) meshes with a rack (10). A limiting component for limiting the rack (10) is provided on one side of the outer wall of the breeding tank (1). The lower part of the outer wall of the breeding tank (1) is provided with a purification component for water purification operation, and the bottom end of the rack (10) is provided with a pumping component for pumping the water in the breeding tank (1) into the purification component.
2. The indoor aquaculture apparatus for red snapper according to claim 1, characterized in that, The feeding assembly includes a feeding box (4) fixedly connected to one side of one of the support plates (2). The inner wall of the feeding box (4) is rotatably fitted with a feeding plate (5). A rotating rod (3) coaxially passes through the feeding box (4) and the feeding plate (5) and extends to one side of the feeding box (4) and is fixedly connected to the feeding plate (5). A feeding groove is opened on the feeding plate (5). The top of the feeding box (4) has a feed inlet and the bottom of the feeding box (4) has a discharge outlet. A feed cylinder (6) is fixedly connected to the feed inlet and a solenoid valve (7) is connected to the discharge outlet. The controller is used to control the opening and closing of the solenoid valve (7).
3. The indoor aquaculture apparatus for red snapper according to claim 2, characterized in that, The light color adjustment component includes several LED lights (8) fixedly connected to the inner wall of the breeding tank (1), and the controller is used to control the LED lights (8) to adjust different light colors.
4. The indoor aquaculture apparatus for red snapper according to claim 3, characterized in that, The limiting component includes a limiting frame (11) fixedly connected to the outer wall of the breeding tank (1), and a rack (10) located inside the limiting frame (11) and sliding vertically with the inner wall of the limiting frame (11).
5. The indoor aquaculture apparatus for red snapper according to claim 4, characterized in that, The pumping assembly includes a pumping box (12) fixedly connected to and connected to the outer wall of the breeding tank (1), with a liquid inlet check valve (13) connected at the connection point. A pumping plate (14) is vertically slidably fitted on the inner wall of the pumping box (12). The bottom end of the rack (10) extends through the top wall of the pumping box (12) and into the pumping box (12) and is fixedly connected to the top of the pumping plate (14).
6. The indoor aquaculture apparatus for red snapper according to claim 5, characterized in that, The purification assembly includes a purification box (15) detachably connected to the outer wall of the breeding tank (1). A liquid discharge check valve (16) is connected to the lower part of the side wall of the breeding tank (1). The purification box (15) is connected to the inside of the breeding tank (1) through the liquid discharge check valve (16). A liquid delivery pipe (17) is connected to the top of the purification box (15). The liquid delivery pipe (17) is connected to the inside of the pumping box (12). The purification box (15) is filled with PP cotton.
7. An indoor culture method for red snapper, applicable to the indoor culture apparatus for red snapper according to any one of claims 1-6, characterized in that, The water temperature in the aquaculture device is controlled between 23-27℃, the pH value of the water is between 7.5-8.2, the salinity of the water is maintained between 27-30, and the water is continuously aerated to keep the dissolved oxygen content above 5.8mg / L; the LED lamp (8) is adjusted to a medium 65W yellow light and is used for lighting treatment during the day from 12:00-18:00 and at night from 24:00-6:00.