A full artificial breeding device and method for promoting natural spawning of a cheilinus undulatus

Abstract

The present application relates to endangered wild fish breeding technology field, specifically to a kind of device and method for promoting natural spawning of artificial breeding of undulated lip fish, wherein device includes spawning pool;Spawning pool side wall is respectively connected with water inlet pipe and drain pipe;Spawning pool bottom is opened with several guide flow ditch, drain pipe is equipped with ovum collection assembly for collecting undulated lip fish egg;Water pool is equipped with wave making assembly for simulating tidal current to activate undulated lip fish breeding behavior;Wave making assembly includes water baffle symmetrically fixedly connected on the side wall of spawning pool, and support fixedly connected on the inner side wall of spawning pool, support is equipped with driving element, controller is used to control the rotation of output shaft of driving element;Driving element's output shaft is coaxially fixedly connected with fan blade;Support is equipped with swing assembly for driving driving element to swing up and down.The present application simulates natural reef tidal current environment, induces parent fish to spawn naturally without external hormone intervention, so as to improve the success rate of breeding.

Description

Technical Field

[0001] This invention relates to the field of breeding technology for endangered wild protected fish, specifically to a fully artificial breeding device and method for promoting natural spawning of the wavy-lipped fish. Background Technology

[0002] The Napoleon wrasse, also known as the wrasse, is a large, high-value coral reef fish. Currently, there are reports on the artificial breeding of Napoleon wrasse both domestically and internationally, all using wild-caught parents for intensive cultivation and artificial spawning induction. Early domestic research mainly relied on wild-caught parents in nearshore cages; however, due to limited wild-caught parents and the influence of uncontrollable factors such as sea waves, red tides, and pathogens, reproductive stability was poor, and the dependence on wild-caught parents was high.

[0003] In existing technologies, LHRH-A2 exogenous hormone is usually introduced into nearshore aquaculture cages to induce spawning. This hormone is a commonly used spawning induced agent in aquaculture. By mimicking the function of gonadotropin-releasing hormone in fish, it promotes the secretion of luteinizing hormone and follicle-stimulating hormone by the pituitary gland of parent fish, thereby inducing gonadal maturation and ovulation.

[0004] However, in the actual process of artificially breeding *Sinocyclocheilus robinia* using this exogenous hormone, it not only interferes with the inherent reproductive rhythm of the parent fish, but also presents problems such as complex operation and stress damage to the parent fish. Therefore, with the drastic decrease in the number of existing farmed wild parent fish and the restriction on wild population harvesting, it is necessary to propose a fully artificial breeding device and method for promoting natural spawning of *Sinocyclocheilus robinia* using artificially bred parent fish to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a fully artificial breeding device and method for promoting natural spawning of the wavy-lipped fish. This method involves constructing a fully artificial environment and simulating the tidal flow environment of a natural reef area to induce parent fish to spawn naturally without or with minimal intervention from exogenous hormones, thereby improving the breeding success rate and seedling quality.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A fully artificial breeding device for promoting natural spawning of the wavy-lipped barb includes a spawning pool and a controller; symmetrically fixed arc-shaped baffles are fixedly connected to the inner wall of the spawning pool; an inlet pipe and an outlet pipe are respectively connected to the side wall of the spawning pool; several guide channels are opened at the bottom of the spawning pool, and an egg-collecting component for collecting wavy-lipped barb eggs is provided on the outlet pipe; a wave-making component for simulating tidal water flow to activate the reproductive behavior of the wavy-lipped barb is provided in the pool; the wave-making component includes water-blocking blocks symmetrically fixedly connected to the side wall of the spawning pool, and a support fixedly connected to the inner wall of the spawning pool, a drive component is provided on the support, and the controller is used to control the rotation of the output shaft of the drive component; a fan blade is coaxially fixedly connected to the output shaft of the drive component; and a swinging component for driving the drive component to swing up and down is provided on the support.

[0007] The technical principles of the above solution are as follows: The wavy-lipped bream are placed in the spawning tank, and water is supplied through the inlet pipe. A controller operates the drive unit's output shaft, rotating the fan blades to create a flowing water flow. Simultaneously, the drain pipe is opened, providing fresh water. At the same time, an oscillating component causes the drive unit to swing up and down, creating longitudinal undulating waves in the water output from the fan blades. This simulates the tidal and current conditions of a natural reef area, stimulating the parent fish's hypothalamic-pituitary-gonadal axis (HPG axis) to mature synchronously, inducing natural spawning. The spawned eggs fall into the guide channel and are then carried by the water flow to the egg collection component on the drain pipe for collection.

[0008] The above approach has the following beneficial effects: 1. This solution simulates the dynamic changes of tidal currents in natural reef areas through the coordinated design of wave-making and oscillating components. It can activate the reproductive behavior of parent fish without relying on exogenous hormones such as LHRH-A2, avoiding the interference and stress damage of hormones on the reproductive rhythm of parent fish. It is more in line with the biological characteristics of the wavy lip fish, improves the quality of spawning and the subsequent survival ability of parent fish, and reduces the stress and damage caused by human intervention.

[0009] 2. This scheme, combined with water flow stimulation, significantly improves the estrus synchronization rate and reproductive capacity of the group. The guide ditch at the bottom of the spawning pond and the egg collection component form a directional collection path, which can reduce collision damage to fish eggs during the flow process and improve the hatching success rate.

[0010] 3. This scheme, through the factory-style aquaculture model of spawning ponds, avoids the risks of wind, waves, red tides, pollution, and cross-infection of pathogens associated with net cage aquaculture, laying the foundation for year-round, controllable, and stable fry production of the wavy-lipped barb. Furthermore, this scheme, based on artificially domesticated broodstock, significantly reduces reliance on wild broodstock, which is of great ecological significance for protecting the endangered wild population of the wavy-lipped barb.

[0011] Furthermore, the swing assembly includes a first connecting rod fixedly connected to the bracket, and a worm gear coaxially fixedly connected to the output shaft of the drive unit; a T-shaped connecting rod and a second connecting rod are respectively hinged to both ends of the first connecting rod; the drive unit is fixedly connected to the side wall of the vertical end of the T-shaped connecting rod, and a rotating shaft is rotatably engaged at the horizontal end of the T-shaped connecting rod away from the first connecting rod; a third connecting rod is fixedly connected to one end of the rotating shaft, and a worm gear is coaxially fixedly connected to the other end of the rotating shaft; the end of the third connecting rod away from the rotating shaft is hinged to the end of the second connecting rod away from the first connecting rod; the worm gear and the worm gear mesh.

[0012] Beneficial effects: By using the meshing transmission of worm gear and worm wheel, the multi-link mechanism drives the drive component to swing up and down without the need for an additional power source, saving energy. Compared with the water flow of traditional fixed pump jets, this design allows the water flow to better match the characteristics of natural reef water waves, enhancing the activation effect on the breeding behavior of parent fish.

[0013] Furthermore, the spawning pool is equipped with a water flow homogenization component to prevent water from being over-rushed; the water flow homogenization component includes support rods symmetrically fixedly connected to the side wall of the spawning pool, and several rotating rods rotatably connected between adjacent support rods; each rotating rod is fixedly connected to a baffle plate.

[0014] Beneficial effects: The baffle disperses the concentrated water flow into a uniform mixed flow, avoiding excessively strong local water flow or the formation of blind spots, ensuring that the parent fish in the whole pond receive stable stimulation and reducing stress damage.

[0015] Furthermore, the spawning tank is equipped with a regulating component for adjusting the water flow velocity; the regulating component includes a guide rail fixedly connected to the bottom of the spawning tank, and a telescopic component fixedly connected to the side wall of the spawning tank; a sliding rod is slidably fitted on the guide rail, and the output shaft of the telescopic component passes through the side wall of the spawning tank and is fixedly connected to the sliding rod, and the controller is used to control the extension and retraction of the output shaft of the telescopic component; L-shaped rods are fixedly connected to one side wall of the baffle, and guide grooves corresponding to the L-shaped rods are opened on the sliding rods, and the vertical ends of the L-shaped rods are slidably fitted with their adjacent guide grooves.

[0016] Beneficial effects: The controller regulates the sliding of the telescopic component, and adjusts the angle of the spoiler through the L-shaped rod and guide groove, flexibly adjusting the wave size to meet the water flow needs of parent fish at different breeding stages.

[0017] Furthermore, the egg collection assembly includes an L-shaped egg collection tube that is detachably connected to the end of the drain pipe away from the spawning pool, and a filter screen is fixedly connected inside the L-shaped egg collection tube.

[0018] Beneficial effects: The L-shaped egg collection tube acts as a buffer, the filter screen can trap fish eggs and separate impurities, and the detachable design makes cleaning and maintenance convenient.

[0019] Furthermore, silicone pads are fixedly connected to the inner walls of the drainage channels.

[0020] Beneficial effects: The soft and smooth silicone material prevents fish eggs from colliding and scratching as they flow in the drainage channel, reducing the damage rate and ensuring the viability of fertilized eggs.

[0021] Furthermore, a silicone pad layer is also fixedly connected to the inner wall of the drain pipe.

[0022] Beneficial effects: Reduces collision damage to fish eggs in the drain pipe, further improving the survival rate of fish eggs.

[0023] Furthermore, a method for fully artificially breeding facilitating natural spawning of the wavy-lipped fish includes the following steps: Step 1: Broodstock rearing. Artificially bred wavy-lipped fish are then subjected to intensive rearing in a rearing pond.

[0024] Step 2, broodstock pairing: During the breeding season, mature broodstock that have undergone intensive cultivation in the rearing pond are paired with females, sub-males and super-males in a ratio of 7-9:1-2:1 to form a breeding group and then transferred to the spawning pond.

[0025] Step 3, Environmental Stimulation: Water exchange is performed in the spawning tank through the inlet and outlet pipes at a rate of 20-30 times per day, while maintaining a quiet environment; wave-making components are used to generate waves in the spawning tank to stimulate the parent fish to spawn naturally, and the water flow rate in the spawning tank is adjusted to 30cm / s-40cm / s using regulating components.

[0026] Step 4, Fish Egg Collection: After the parent fish have finished spawning, the water flow rate in the spawning pond is reduced to 10-15 cm / s by adjusting the components. The fertilized eggs are guided by the water flow along the guide channel into the drain pipe and into the filter screen of the L-shaped egg collection tube for collection. After collection, the L-shaped egg collection tube is removed, the fertilized eggs trapped by the filter screen are taken out, and transferred to the hatching pond for subsequent seedling hatching operations.

[0027] Beneficial effects: By introducing sub-male fish as a social behavior stimulus and combining it with physical water flow stimulation, the synergistic activation of multiple sensory channels was achieved. This method can significantly improve the estrus synchronization rate of the breeding population and effectively stimulate the frequency and intensity of courtship behavior in super-male fish, thereby improving overall reproductive activity and fertilization success rate.

[0028] Furthermore, in step one, the water used for enhanced cultivation in the culture tank is seawater that has undergone three-stage filtration (coarse sand, fine sand, and biological filler) and ultraviolet disinfection. Its environmental parameters are: light intensity 5000 lx, dissolved oxygen 6 mg / L, pH 7.8-8.2, temperature 24-33℃, and salinity 26-30. The enhanced cultivation steps are as follows: S1: Starting 3 months before the spawning period, feed at least two of the following combinations of feed daily: mixed crabs, shrimp, triggerfish, squid, and green mussels. The amount of feed should be 3%-4% of the individual weight of the broodstock, and supplement with aquatic-specific multivitamins twice a week.

[0029] S2: When the abdomen of the female fish in the broodstock is swollen, adjust the feed to frozen shrimp, green mussels and mixed crabs.

[0030] Beneficial effects: Strict control over the filtration and disinfection process and environmental parameters of the aquaculture water matches the suitable conditions for the growth and reproduction of the wavy-lipped fish, reducing the risk of pathogen infection. Combined with a phased nutritional fortification program, a multi-various feed combination ensures comprehensive nutritional intake during the three months before spawning. After the female fish's abdomen swells, the feed is adjusted to specifically supplement the nutrients required for spawning, significantly improving the gonadal maturity and health of the prospective broodstock, laying a solid physiological foundation for subsequent natural spawning.

[0031] Furthermore, in step two, the super-male fish are ≥15 years old and weigh ≥30kg; the sub-male fish weigh 8-10kg; and the female fish weigh 6-8kg with a bulging abdomen.

[0032] Beneficial effects: By clearly defining key screening indicators such as the age and body weight of parent fish, it ensures that the breeding population consists of high-quality individuals with mature gonads. By scientifically matching females, sub-males, and super-males, the sub-males can release mating signals to activate the reproductive behavior of the dominant super-males, forming a reproductive social structure adapted to the natural habits of the females. This further improves the synchronized estrus rate and spawning efficiency of the group, ensuring the stability and reliability of the breeding process.

[0033] 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

[0034] Figure 1 This is an isometric view of the fully artificial breeding device for promoting natural spawning of the wavy-lipped fish according to the present invention.

[0035] Figure 2 This is a side cross-sectional view of the fully artificial breeding device for promoting natural spawning of the wavy-lipped fish according to the present invention.

[0036] Figure 3 for Figure 2 Enlarged view of section A.

[0037] Figure 4 This is a top sectional view of the fully artificial breeding device for promoting natural spawning of the wavy-lipped fish according to the present invention.

[0038] Figure 5 for Figure 4 Enlarged view of section B.

[0039] Figure 6 This diagram illustrates the steps of the fully artificial breeding method for promoting natural spawning of the wavy-lipped fish according to the present invention.

[0040] The reference numerals in the accompanying drawings of the instruction manual include: 1. Spawning pool; 2. Arc-shaped baffle; 3. Inlet pipe; 4. Drain pipe; 5. Guide channel; 6. Water-blocking block; 7. Support; 8. Waterproof motor; 9. Fan blade; 10. First connecting rod; 11. Worm gear; 12. T-shaped connecting rod; 13. Second connecting rod; 14. Rotating shaft; 15. Third connecting rod; 16. Worm gear; 17. Support rod; 18. Baffle plate; 19. Guide rail; 20. Electric control cylinder; 21. Slide rod; 22. L-shaped rod; 23. L-shaped egg collection tube. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] 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.

[0044] The following detailed description illustrates the specific implementation method: Implementation, for example, attached Figure 1As shown: A fully artificial breeding device for promoting natural spawning of the wavy-lipped barb includes a spawning pool 1 and a controller. The spawning pool 1 has dimensions of 8.0m × 8.0m × 1.2m. The inner wall of the spawning pool 1 has symmetrically integrally formed arc-shaped baffles 2. The side wall of the spawning pool 1 is connected to an inlet pipe 3 and an outlet pipe 4. Several guide channels 5 are opened at the bottom of the spawning pool 1. The inner wall of each guide channel 5 is fixedly bonded with a silicone pad. The inner wall of the outlet pipe 4 is also fixedly bonded with a silicone pad. The outlet pipe 4 is equipped with an egg collection component for collecting wavy-lipped barb eggs. The pool is equipped with a wave-making component for simulating tidal water flow to activate the reproductive behavior of the wavy-lipped barb.

[0045] like Figure 1 As shown, specifically, the egg collection assembly includes an L-shaped egg collection tube 23 that is detachably connected to the end of the drain pipe 4 away from the spawning pool 1, and a filter screen is fixedly connected inside the L-shaped egg collection tube 23 by screws.

[0046] like Figure 2 and Figure 3 As shown, specifically, the wave-generating component includes a water-blocking block 6 symmetrically and integrally formed on the side wall of the spawning pool 1, and a bracket 7 fixedly connected to the inner side wall of the spawning pool 1 by bolts. The bracket 7 is provided with a driving component, and the controller is used to control the rotation of the output shaft of the driving component. In this embodiment, the driving component is a waterproof motor 8; a fan blade 9 is coaxially fixedly welded on the output shaft of the waterproof motor 8; and the bracket 7 is provided with a swinging component for driving the waterproof motor 8 to swing up and down.

[0047] Combination Figure 1 , Figure 2 and Figure 3 As shown, mature broodstock of the wavy-lipped fish are grouped into breeding groups of females, sub-males, and super-males, and then transferred to spawning pond 1. Water is supplied to spawning pond 1 through inlet pipe 3 to begin the breeding operation. The operator uses a controller to start the waterproof motor 8, whose output shaft drives the fan blades 9 to rotate, generating a basic water flow in the right direction. At the same time, the oscillating component drives the waterproof motor 8 to oscillate up and down, making the water flow output by the fan blades 9 form longitudinal undulating waves, thereby simulating the tidal and water flow conditions of a natural reef area. Under the stimulation of the water flow, the hypothalamus-pituitary-gonadal axis (HPG axis) of the broodstock matures synchronously and spawns naturally. The fish eggs fall into the guide channel 5 at the bottom of spawning pond 1, flow smoothly along the silicone mat layer, and flow into the L-shaped egg collection pipe 23 through the drain pipe 4. The fish eggs are separated from impurities through the filter screen, completing the efficient and non-destructive collection.

[0048] like Figure 3As shown, specifically, the oscillating assembly includes a first connecting rod 10 fixedly connected to the bracket 7 by bolts, and a worm gear 11 coaxially fixedly connected to the output shaft of the waterproof motor 8 by bolts; T-shaped connecting rods 12 and second connecting rods 13 are respectively hinged to both ends of the first connecting rod 10; the waterproof motor 8 is fixedly connected to the vertical side wall of the T-shaped connecting rod 12 by bolts; a rotating shaft 14 is rotatably fitted to the horizontal end of the T-shaped connecting rod 12 away from the first connecting rod 10; a third connecting rod 15 is integrally formed at one end of the rotating shaft 14; a worm gear 16 is coaxially fixedly connected to the other end of the rotating shaft 14 by bolts; the end of the third connecting rod 15 away from the rotating shaft 14 is hinged to the end of the second connecting rod 13 away from the first connecting rod 10; the worm gear 16 and the worm gear 11 mesh. A water flow homogenization assembly is provided in the spawning pool 1 to prevent excessive water flow.

[0049] Combination Figure 3 As shown, when the output shaft of the waterproof motor 8 rotates, it drives the worm gear 11 and the fan blade 9 to rotate. The fan blade 9 drives the water in the spawning pool 1 to flow to the right. Since the worm gear 11 and the turbine mesh, the worm wheel 16 rotates at this time. The rotation of the turbine synchronously drives the rotating shaft 14 fixed to it to rotate. The rotation of the rotating shaft 14 synchronously drives the third connecting rod 15 to rotate.

[0050] Since the first connecting rod 10, the T-shaped connecting rod 12, and the second connecting rod 13 are hinged together, they form a triangle. When the third connecting rod 15 rotates upward from the pivot 14, the angle between the horizontal end of the T-shaped connecting rod 12 and the first connecting rod 10 increases, causing the T-shaped connecting rod 12 to tilt to the right. At this time, the T-shaped connecting rod 12 causes the waterproof motor 8 to tilt in a "\" shape, and the fan blades 9 cause the water in the spawning pool 1 to flow downward to the right. When the third connecting rod 15 rotates downward from the pivot 14, the angle between the horizontal end of the T-shaped connecting rod 12 and the first connecting rod 10 decreases, causing the T-shaped connecting rod 12 to tilt downward to the right. When the connecting rod 12 tilts to the left, the T-shaped connecting rod 12 drives the waterproof motor 8 to tilt in a " / " shape. At this time, the fan blade 9 drives the water in the spawning pool 1 to flow to the upper right. The worm gear 16 continuously rotates, driving the third connecting rod 15 to rotate continuously. At this time, the T-shaped connecting rod 12 drives the waterproof motor 8 to swing up and down, making the water flow form a longitudinal undulating tidal flow. This water flow pattern can simulate the flow of water in the natural environment, thereby stimulating the parent fish, avoiding the interference of hormones on the reproductive rhythm of the parent fish and stress damage, which is more in line with the biological characteristics of the wavy-lipped fish, improving the quality of spawning and the subsequent survival activity of the parent fish, and reducing the stress and damage caused by human intervention.

[0051] like Figure 1 and Figure 4As shown, specifically, the water flow homogenization component includes support rods 17 symmetrically bolted to the side wall of the spawning tank 1, with several rotating rods rotatably connected between adjacent support rods 17; each rotating rod has an integrally formed baffle 18. The spawning tank 1 is equipped with an adjustment component for regulating the water flow velocity. In this embodiment, the baffles 18 are initially parallel to each other.

[0052] Combination Figure 4 As shown, when the water in the spawning pond 1 flows to the right, the water can pass through the space between the parallel baffles 18. The baffles 18 disperse the concentrated water flow into a uniform mixed flow, avoiding excessively strong local water flow or the formation of blind spots. This prevents the fish eggs from spreading or being damaged by collisions due to excessively strong water flow, ensuring that the parent fish in the spawning pond 1 receive stable stimulation and reducing stress damage.

[0053] like Figure 5 As shown, specifically, the adjustment assembly includes a guide rail 19 fixedly connected to the bottom of the spawning pool 1 by bolts, and a telescopic component fixedly connected to the side wall of the spawning pool 1 by bolts. In this embodiment, the telescopic component is an electric control cylinder 20. A sliding rod 21 is slidably fitted on the guide rail 19. The output shaft of the electric control cylinder 20 passes through the side wall of the spawning pool 1 and is fixedly connected to the sliding rod 21 by bolts. The controller is used to control the extension and retraction of the output shaft of the electric control cylinder 20. An L-shaped rod 22 is integrally formed on one side wall of the baffle 18. The sliding rod 21 has guide grooves that correspond one-to-one with the L-shaped rod 22. The vertical ends of the L-shaped rod 22 are slidably fitted with their adjacent guide grooves.

[0054] Combination Figure 5 As shown, when the operator needs to adjust the water flow speed, the controller controls the output shaft of the electric control cylinder 20 to retract, pulling the slide bar 21 downward. At this time, the guide groove on the slide bar 21 can drive the L-shaped rod 22 to drive the baffle 18 to rotate counterclockwise. At this time, all the baffles 18 change from horizontal to inclined. At this time, the water flow can collide with the baffles 18, and the flow speed slows down. When the output shaft of the electric control cylinder 20 extends, it drives the slide bar 21 to slide upward. At this time, the guide groove drives the L-shaped rod 22 to drive the baffles 18 to rotate clockwise until they gradually become parallel to each other. At this time, the water flow speed increases. The controller controls the extension and retraction of the output shaft of the electric control cylinder 20 to control the water flow speed in the spawning pond 1, thereby adapting the water flow to the different stages of broodstock pre-stimulation, spawning peak, and egg collection.

[0055] like Figure 6 As shown, a method for fully artificially breeding facilitating natural spawning of the wavy-lipped fish specifically includes the following steps: Step one, broodstock rearing: Artificially broodstock of the wavy-lipped fish are intensively reared in a rearing pond. The rearing pond measures 5.0m × 5.0m × 1.2m.

[0056] The water used in the enhanced cultivation tank is seawater that has undergone three-stage filtration (coarse sand, fine sand, and biological filler) and ultraviolet disinfection. Its environmental parameters are: light intensity 5000 lx, dissolved oxygen 6 mg / L, pH 7.8-8.2, temperature 26℃, and salinity 26. The enhanced cultivation steps are as follows: S1: Starting 3 months before the spawning season (December each year), feed at least two of the following combinations of feed: mixed crab, shrimp, triggerfish, squid and green mussels at 08:00 and 16:00 daily. The amount of feed should be 3% of the individual weight of the broodstock, and supplement with aquatic-specific multivitamins twice a week.

[0057] S2: When the abdomen of the female fish in the broodstock is swollen, fix the food to frozen shrimp, green mussels and mixed crabs.

[0058] Step 2, broodstock pairing: During the breeding season, mature broodstock that have undergone intensive cultivation in the rearing pond are paired with females, sub-males and super-males in a ratio of 8:2:1 to form a breeding group, and then transferred to spawning pond 1.

[0059] The supermale fish were 15 years old and weighed 30 kg; the female fish weighed 6 kg with a bulging abdomen; and the sub-male fish weighed 10 kg. In this embodiment, the sub-male fish were male individuals smaller than the supermale fish, and they played a role in simulating natural courtship competition, stimulating the gonadal development and courtship behaviors of the supermale fish in the group.

[0060] Step 3, Environmental Stimulation: Water exchange is performed in spawning tank 1 via inlet pipe 3 and outlet pipe 4 at a rate of 20 times per day, while maintaining a quiet environment. Wave-generating components create waves in spawning tank 1 to stimulate the broodstock to spawn naturally. The water flow velocity in spawning tank 1 is adjusted to 30-40 cm / s using regulating components to simulate the tidal and current conditions of a natural reef area, stimulating the synchronous maturation of the hypothalamic-pituitary-gonadal axis (HPG axis) in the broodstock. Under these conditions, the broodstock typically complete spawning and fertilization naturally between 5:00 AM and 10:00 AM.

[0061] Step 4, Fish Egg Collection: After the parent fish have finished spawning, the water flow rate in spawning pond 1 is reduced to 10-15 cm / s by adjusting the components. The fertilized eggs are guided by the water flow along the guide channel 5 and flow into the drain pipe 4 and into the filter screen of the L-shaped egg collection tube 23 for collection. After collection, the L-shaped egg collection tube 23 is removed, the fertilized eggs trapped by the filter screen are taken out, and transferred to the hatching pond for subsequent seedling hatching operations.

[0062] This embodiment monitored the fertilized egg production data of some batches three days before spawning: a total of 4.27 kg of fertilized eggs were obtained, with a peak daily spawning volume of 450 g; the average fertilization rate was 71%, with a maximum daily fertilization rate of 90%; the average hatching rate was 81%, with a maximum daily hatching rate of 95%. Detailed data are shown in Table 1, which is a table of spawning characteristics in the factory farming of the wavy-lipped wrasse.

[0063] Table 1 Conclusion: This scheme, through environmental control and optimization of the reproductive population structure, allows for the placement of several spawning ponds and rearing ponds within a factory, establishing a highly efficient industrialized breeding system for the wavy-lipped barbel, successfully achieving stable natural spawning and efficient hatching. Compared to traditional marine cage culture, industrialized breeding effectively avoids uncontrollable risks in natural marine environments such as wind and waves, red tides, pathogen invasions, and drastic temperature fluctuations. Introducing sub-males into the breeding population to form a breeding group, and utilizing their release of male pheromones or courtship behaviors such as body coloration and chasing, effectively activates the reproductive behavior of supermales. Combined with water currents of 30 cm / s or higher, this stimulates the function of the supermale hypothalamus-pituitary-gonadal (HPG) axis, thereby synchronously initiating and completing the final reproductive maturation and ovulation behaviors. This is consistent with the reproductive social structure and habits of this species in natural reef areas, such as polygyny (female-to-male ratio 6:1–10:1) and male courtship. The average fertilization rate and hatching rate of fertilized eggs reached 71% and 81%, respectively, with the highest single-day fertilization rate and hatching rate reaching 90% and 95%, respectively. This fully demonstrates the superiority of factory-style, fully artificial environment breeding, reaching or exceeding the level of spawning by hormone-induced spawning or natural marine cage breeding.

[0064] 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. A fully artificial breeding device for promoting natural spawning of the wavy-lipped fish, comprising a spawning pond (1), characterized in that, It also includes a controller; arc-shaped baffles (2) are symmetrically fixedly connected to the inner wall of the spawning pool (1); water inlet pipe (3) and water outlet pipe (4) are respectively connected to the side wall of the spawning pool (1); The bottom of the spawning pond (1) has several diversion channels (5), and the drain pipe (4) is equipped with an egg collection component for collecting the eggs of the wavy-lipped fish; the pond is equipped with a wave-making component for simulating tidal water flow to activate the reproductive behavior of the wavy-lipped fish. The wave-making component includes a water-blocking block (6) symmetrically fixedly connected to the side wall of the spawning pool (1), and a bracket (7) fixedly connected to the inner side wall of the spawning pool (1). The bracket (7) is equipped with a drive component, and the controller is used to control the rotation of the output shaft of the drive component. A fan blade (9) is coaxially fixedly connected to the output shaft of the drive component. The bracket (7) is equipped with a swing component for driving the drive component to swing up and down. The swing assembly includes a first connecting rod (10) fixedly connected to the bracket (7) and a worm gear (11) coaxially fixedly connected to the output shaft of the drive unit; a T-shaped connecting rod (12) and a second connecting rod (13) are respectively hinged to both ends of the first connecting rod (10); the drive unit is fixedly connected to the side wall of the vertical end of the T-shaped connecting rod (12), and a rotating shaft (14) is rotatably engaged at the horizontal end of the T-shaped connecting rod (12) away from the first connecting rod (10); a third connecting rod (15) is fixedly connected to one end of the rotating shaft (14), and a worm wheel (16) is coaxially fixedly connected to the other end of the rotating shaft (14); the end of the third connecting rod (15) away from the rotating shaft (14) is hinged to the end of the second connecting rod (13) away from the first connecting rod (10); the worm wheel (16) and the worm gear (11) mesh; The spawning pool (1) is equipped with a water flow homogenization component to prevent water from being over-rushed; the water flow homogenization component includes support rods (17) that are symmetrically fixedly connected to the side wall of the spawning pool (1), and several rotating rods are rotatably connected between adjacent support rods (17); each rotating rod is fixedly connected with a baffle plate (18). The spawning pond (1) is equipped with a regulating component for adjusting the water flow rate; The adjustment assembly includes a guide rail (19) fixedly connected to the bottom of the spawning pool (1) and a telescopic component fixedly connected to the side wall of the spawning pool (1); a slide rod (21) is slidably fitted on the guide rail (19); the output shaft of the telescopic component passes through the side wall of the spawning pool (1) and is fixedly connected to the slide rod (21); the controller is used to control the extension and retraction of the output shaft of the telescopic component. L-shaped rods (22) are fixedly connected to one side wall of the spoiler (18), and guide grooves corresponding to the L-shaped rods (22) are opened on the slide rods (21). The vertical ends of the L-shaped rods (22) slide in cooperation with their adjacent guide grooves. The egg collection assembly includes an L-shaped egg collection tube (23) that is detachably connected to the end of the drain pipe (4) away from the spawning pool (1), and a filter screen is fixedly connected inside the L-shaped egg collection tube (23).

2. The fully artificial breeding device for promoting natural spawning of the wavy-lipped fish according to claim 1, characterized in that, Silicone pads are fixedly connected to the inner wall of the drainage channel (5).

3. The fully artificial breeding device for promoting natural spawning of the wavy-lipped fish according to claim 2, characterized in that, A silicone pad is also fixedly connected to the inner wall of the drain pipe (4).

4. A method for fully artificially breeding a species of wavy-lipped barb that promotes natural spawning, based on the fully artificial breeding apparatus for promoting natural spawning of wavy-lipped barb according to any one of claims 1-3, characterized in that, Includes the following steps: Step 1, parent fish cultivation: The artificially bred wavy-lipped fish are intensively cultivated in a breeding pond. Step 2, broodstock pairing: During the breeding season, mature broodstock that have undergone intensive breeding in the rearing pond are paired with females, sub-males and super-males in a ratio of 7-9:1-2:1 to form a breeding group and then transferred to the spawning pond (1). Step 3, environmental stimulation: Water exchange is performed in the spawning pond (1) through the inlet pipe (3) and outlet pipe (4) at a rate of 20-30 times per day, while keeping the environment quiet; waves are generated in the spawning pond (1) through the wave generator to stimulate the parent fish in the spawning pond (1) to spawn naturally, and the water flow velocity in the spawning pond (1) is adjusted to 30cm / s-40cm / s through the regulating component; Step 4, Fish Egg Collection: After the parent fish have finished spawning, the water flow rate in the spawning pond (1) is reduced to 10-15 cm / s by adjusting the components. The fertilized eggs are guided to flow along the guide channel (5) into the drain pipe (4) and into the filter screen of the L-shaped egg collection tube (23) for collection. After collection, the L-shaped egg collection tube (23) is removed, the fertilized eggs trapped by the filter screen are taken out, and transferred to the hatching pond for subsequent seedling hatching operations.

5. The method for fully artificial reproduction of *Siniperca pulcherrima* to promote natural spawning according to claim 4, characterized in that, In step one, the water used for intensive cultivation in the culture tank is seawater that has undergone three-stage filtration (coarse sand, fine sand, and biological filler) and ultraviolet disinfection. Its environmental parameters are: light intensity 5000 lx, dissolved oxygen 6 mg / L, pH 7.8-8.2, temperature 24-33℃, and salinity 26-30. The intensive cultivation steps are as follows: S1: Starting 3 months before the spawning period, feed at least two of the following combinations of feeds daily: shrimp, mixed crab, triggerfish, squid and green mussels. The amount of feed should be 3%-4% of the individual weight of the broodstock, and supplement with aquatic-specific multivitamins twice a week. S2: When the abdomen of the female fish in the broodstock is swollen, adjust the feed to frozen shrimp, green mussels and mixed crabs.

6. The method for fully artificial reproduction of *Siniperca pulcherrima* to promote natural spawning according to claim 5, characterized in that, In step two, the super-male fish should be ≥15 years old and weigh ≥30kg; the female fish should weigh 6-8kg with a bulging abdomen; and the sub-male fish should weigh 8-10kg.

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