A bionic fish nest with the function of water ecological restoration

Abstract

This application relates to the technical field of water ecological restoration, and particularly to a bionic fish nest with water ecological restoration function, which includes a fish nest main body. The fish nest main body is arranged in a water droplet streamline shape. The two sides of the fish nest main body are respectively a water-facing energy dissipation surface and a back water surface. The water-facing energy dissipation surface is used to increase the water flow resistance. A number of hiding grooves are provided on the fish nest main body, and a number of the hiding grooves are all opened on the back water surface of the fish nest main body. It also includes a placement container, and a fish attracting material is arranged inside the placement container. The fish attracting material is used to attract fish. This application has the effect of improving the living and spawning environment of fish near the river channel and increasing the attractiveness between the fish nest and fish.

Description

Technical Field

[0001] This application relates to the technical field of aquatic ecological restoration, and in particular to a bionic fish nest with the function of aquatic ecological restoration. Background Art

[0002] Affected by human activities such as waterway regulation and sand dredging, the coverage rate of aquatic vegetation in rivers and lakes has decreased sharply, destroying important habitats for fish spawning, foraging, and breeding, and the fish resources showing a declining trend. To alleviate this situation, people mostly compensate for fish habitats by restoring aquatic vegetation or deploying artificial fish nests, so as to achieve the purpose of protecting fish resources.

[0003] Currently, square artificial fish nest bricks are deployed on both sides of the river embankments. The fish nest bricks are hollow and have several holes on the surface for fish to shuttle and play; however, the color, shape, etc. of the artificial fish nest bricks are significantly different from natural materials and are not easily accepted by fish, so the fish attracting effect is poor, and the fish egg attachment rate is also relatively low. Moreover, the water flow in some river channels is usually relatively rapid, and the river waves are likely to impact the fish nest bricks on both sides, greatly affecting the healthy habitat of fish. Summary of the Invention

[0004] In order to improve the living and spawning environment of fish near the river channel and increase the attractiveness of the fish nest to fish, this application provides a bionic fish nest with the function of aquatic ecological restoration.

[0005] The bionic fish nest with the function of aquatic ecological restoration provided by this application adopts the following technical solutions:

[0006] A bionic fish nest with the function of aquatic ecological restoration includes a fish nest main body. The fish nest main body is arranged in a water droplet streamline shape. The two sides of the fish nest main body are respectively a water-facing energy dissipation surface and a back water surface. The water-facing energy dissipation surface is used to increase the water flow resistance; several avoidance grooves are arranged on the fish nest main body, and several of the avoidance grooves are all opened on the back water surface of the fish nest main body; it also includes a placement container, and a fish attracting material is arranged inside the placement container, and the fish attracting material is used to attract fish.

[0007] By adopting the above technical solutions, the water-facing energy dissipation surface can block the water flow, causing the direction of the water flow to change, so as to reduce the flow velocity of the water flow near the main body of the fish nest, thereby facilitating the deposition of nutrients and the stay of fish; after passing through the water-facing energy dissipation surface, the water flow can form a region with a stable and relatively slow flow velocity near the back water surface above the main body of the fish nest, so as to facilitate the main body of the fish nest to receive the deposited nutrients on the back water surface, thereby facilitating the foraging of fish; the avoidance groove can be used for fish to stay and inhabit. When in use, fish can stay in the avoidance groove, and the side wall of the avoidance groove close to the water-facing energy dissipation surface can block the water flow, slowing down the flow velocity of the water flow on the inner wall of the avoidance groove and improving the comfort of fish when living on the main body of the fish nest; the fish-attracting material can attract fish, so as to increase the attraction of the main body of the fish nest to fish, and facilitate fish to build nests on the main body of the fish nest.

[0008] Optionally, a plurality of convex stripes are convexly arranged on the surface of the main body of the fish nest, and the plurality of convex stripes are evenly distributed along the extending direction of the main body of the fish nest.

[0009] By adopting the above technical solutions, the convex stripes on the main body of the fish nest can facilitate the adhesion and growth of plankton and bacteria and algae, so as to facilitate the formation of a biofilm by phytoplankton and bacteria and algae on the main body of the fish nest, and realize the improvement of the living and spawning environment of fish near the river channel.

[0010] Optionally, an installation hole adapted to the placement container is formed in the side wall of the main body of the fish nest, the inner wall of the installation hole is in clearance fit with the outer wall of the placement container, and a filler is filled between the inner wall of the installation hole and the outer wall of the placement container.

[0011] By adopting the above technical solutions, the filler can fill the gap between the placement container and the inner wall of the installation hole, thereby reducing the possibility of the placement container falling off from the installation hole.

[0012] Optionally, the placement container includes a sleeve and a wing ring. The fish-attracting material is arranged in the sleeve, and a plurality of through holes are formed through the sleeve; the wing ring is arranged around the outer wall of the sleeve, and the wing ring and the sleeve are coaxially arranged; the maximum outer diameter of the wing ring is smaller than the inner diameter of the installation hole.

[0013] By adopting the above technical solutions, when the filler fills the gap between the placement container and the inner wall of the installation hole, the wing ring makes the sleeve and the filler into a whole, thereby increasing the stability between the sleeve and the filler. The wing ring can enhance the anti-pulling ability of the sleeve and reduce the possibility of the sleeve falling off from the installation hole.

[0014] Optionally, the mounting holes are disposed through the side walls in the thickness direction of the fish nest body, and the extending direction of the mounting holes is consistent with the thickness direction of the fish nest body; a base is protrudingly provided on the end wall of any one end of the sleeve, and the base is coaxially arranged with the axis of the sleeve; the maximum outer diameter of the base is larger than the inner diameter of the mounting hole, and a lifting lug is provided at one end of the sleeve away from the base, and the lifting lug protrudes from the fish nest body.

[0015] By adopting the above technical solution, when the size of the fish nest body is large, mechanical tools are required to hoist and place the fish nest body; during hoisting, the lifting lug is placed on the hook to facilitate the suspension of the fish nest body by the crane. The maximum outer diameter of the base is larger than the inner diameter of the mounting hole, so that the base can support at the opening of the mounting hole, thereby reducing the possibility that the placement container falls off from the mounting hole when the staff hoists the fish nest body.

[0016] Optionally, both ends in the extending direction of the lifting lug are respectively disposed on both sides in the width direction of the sleeve. The lifting lug is detachably connected to the side wall of the sleeve, and limiting bolts are provided on the side walls at both ends in the extending direction of the lifting lug. The limiting bolts are sequentially passed through the lifting lug and the side wall of the sleeve.

[0017] By adopting the above technical solution, when the fish nest body does not need to be hoisted, the staff can remove the lifting lug, thereby reducing the possibility of affecting the water flow velocity near the fish nest body due to the lifting lug protruding from the outside of the fish nest body; when the fish nest body needs to be mechanically hoisted, the limiting bolts are sequentially passed through the lifting lug and the side wall of the sleeve, so that the side wall of the lifting lug is clamped between the limiting bolt and the side wall of the sleeve, and the crane improves the convenience of the staff when hoisting the fish nest body by lifting.

[0018] Optionally, through grooves are respectively opened at both ends in the extending direction of the side wall of the lifting lug, the extending direction of the through grooves is consistent with the length direction of the sleeve, and the limiting bolts are passed through one end of the through groove close to the base; a gasket is provided at one end of the head of the limiting bolt close to the sleeve, and the gasket can dissolve in water; the limiting bolt is made of ferromagnetic metal, and a magnet is embedded at one end of the inner wall of the through groove away from the base.

[0019] By adopting the above technical solution, when the fish nest body needs to be hoisted, the lifting lug is fixed to the end of the sleeve by the limiting bolt, and the lifting lug protrudes from the upper surface of the fish nest body; when the gasket dissolves, the lifting lug is movably arranged with the sleeve, and the limiting bolt can attract the magnet, so that the lifting lug can move towards the direction close to the base of the sleeve, thereby reducing the possibility of the lifting lug protruding from the surface of the fish nest body, and further reducing the possibility of affecting the water flow velocity near the fish nest body due to the lifting lug protruding from the outside of the fish nest body, and improving the comfort of fish survival and reproduction.

[0020] Optionally, the fish attracting material is a permanent magnet bar, and the permanent magnet bar is disposed inside the placement container.

[0021] By adopting the above technical solution, fish have the ability to sense magnetic fields. Permanent magnets can utilize the fish's ability to sense magnetic fields to attract fish and correct the migration routes of migratory fish, thereby avoiding harm to fish caused by hydraulic structures or ship routes, etc. In addition, the magnetic field generated by the permanent magnet can stimulate the fish body's immune system, activate immune cells and regulate immune functions to extend the lifespan of fish.

[0022] Optionally, the fish attracting material adopts a solid slow-release fish attracting pheromone. The fish attracting pheromone includes a feeding pheromone and / or a sex pheromone and / or a safety pheromone, and the feeding pheromone and / or the sex pheromone and / or the safety pheromone are sealed in a solid substance; the solid slow-release fish attracting pheromone is disposed inside the sleeve.

[0023] By adopting the above technical solution, after the fish nest sinks to the bottom of the water, sugars dissolve slowly when encountering water. After the solid substance dissolves, it can slowly release the pheromone, and the pheromone can attract the nearby fish to achieve a better fish attracting effect, facilitating the growth and reproduction of fish.

[0024] Optionally, the sleeve is made of a transparent plastic material, the fish attracting material adopts solidified luminous bacteria, and the solidified luminous bacteria are disposed inside the sleeve.

[0025] By adopting the above technical solution, the light emitted by the solidified luminous bacteria can penetrate through the end wall of the sleeve to attract the surrounding fish to build nests near the fish nest main body. In addition, after the water quality deteriorates, the light emitted by the luminous bacteria will be inhibited, and the staff can judge the water quality situation near the fish nest main body through the intensity of the light emitted by the solidified luminous bacteria, enabling the staff to monitor and adjust the environment near the fish nest main body in a timely manner to improve the living environment of fish.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The water-facing energy dissipation surface can block the water flow, causing the direction of the water flow to change, so as to reduce the flow velocity of the water flow near the fish nest main body, thereby facilitating the deposition of nutrients and the stay of fish; after the water flow passes through the water-facing energy dissipation surface, a region with a stable and slow flow velocity can be formed near the back water surface above the fish nest main body, facilitating the fish nest main body to receive the deposited nutrients on the back water surface, thereby facilitating the foraging of fish; fish can stay in the avoidance groove, and the side wall of the avoidance groove can block the water flow, slowing down the flow velocity of the water flow inside the avoidance groove, facilitating the stay and spawning of fish in the avoidance groove, and improving the comfort of fish when living in the fish nest main body;

[0028] 2. The fish attracting material can attract fish to increase the attraction of the fish nest main body to fish, facilitating the fish to build nests on the fish nest main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural view of the bionic fish nest with water ecological restoration function in Embodiment 1;

[0030] Figure 2 is a schematic structural view of the bionic fish nest that needs mechanical hoisting in Embodiment 1;

[0031] Figure 3 is a schematic structural view of the placement container in Embodiment 1;

[0032] Figure 4 is Figure 2 a sectional view along line F-F in;

[0033] Figure 5 is Figure 4 an enlarged schematic view of part A in.

[0034] Reference numerals: 1, fish nest main body; 11, water-facing energy dissipation surface; 12, back water surface; 2, hiding groove; 3, placement container; 31, sleeve; 311, through hole; 32, wing ring; 33, lifting lug; 34, base; 35, limit bolt; 36, through groove; 37, gasket; 38, magnet; 4, mounting hole; 5, filler. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following further elaborates on the present application in conjunction with the attached Figures 1-5 drawings.

[0036] An embodiment of the present application discloses a bionic fish nest with water ecological restoration function.

[0037] Embodiment 1

[0038] Refer to Figure 1, A bionic fish nest with water ecological restoration function includes a fish nest main body 1. The fish nest main body 1 is arranged in a water droplet streamline shape. The two sides in the length direction of the fish nest main body 1 are respectively a water-facing energy dissipation surface 11 and a back water surface 12. The water-facing energy dissipation surface 11 faces the upstream of the river, and the back water surface 12 faces the downstream of the river. The water-facing energy dissipation surface 11 can block the water flow, causing the direction of the water flow to change, so as to reduce the flow velocity of the water flow near the fish nest main body 1, thereby facilitating the deposition of nutrients and the stay of fish. The length of the back water surface 12 is greater than that of the water-facing energy dissipation surface 11, and the included angle between the back water surface 12 and the riverbed is smaller than the included angle between the water-facing energy dissipation surface 11 and the riverbed, so that the water flow can form a stable and slow-flow area above the fish nest main body 1 after passing through the water-facing energy dissipation surface 11, facilitating the back water surface 12 of the fish nest main body 1 to collect the deposited nutrients, thus facilitating the foraging of fish and improving the comfort of fish when living in the fish nest main body 1.

[0039] Refer to Figure 1 , A number of avoidance grooves 2 are provided on the fish nest main body 1. A number of avoidance grooves 2 are all opened on the back water surface 12 of the fish nest main body 1. In this embodiment, a number of avoidance grooves 2 are symmetrically arranged on both sides in the width direction of the fish nest main body 1, and the extending direction of the avoidance grooves 2 is consistent with the thickness direction of the fish nest main body 1. The avoidance grooves 2 can be used for fish to stay and inhabit. When in use, fish can stay in the avoidance grooves 2, and the side wall of the avoidance grooves 2 close to the water-facing energy dissipation surface 11 can block the water flow, slowing down the flow velocity of the water flow on the inner wall of the avoidance grooves 2, thereby reducing the possibility that fish are washed away due to the impact of the water flow when inhabiting in the avoidance grooves 2. At the same time, fish can lay fish eggs on the inner wall of the avoidance grooves 2, and the avoidance grooves 2 can protect the fish eggs, thereby reducing the possibility that the fish eggs fall off due to the impact of the water flow, realizing the improvement of the living and spawning environment of fish near the river channel.

[0040] In this embodiment, the fish nest main body 1 is integrally formed by 3D printing with waterproof concrete, and a number of convex stripes are convexly arranged on the surface of the fish nest main body 1. The a number of convex stripes on the fish nest main body 1 are evenly distributed along the extending direction of the fish nest main body 1. The convex stripes on the fish nest main body 1 can facilitate the rooting and growth of plankton and bacteria and algae, thereby facilitating the formation of a biofilm by phytoplankton and bacteria and algae on the fish nest main body 1, realizing the improvement of the living and spawning environment of fish near the river channel.

[0041] Refer to Figure 1 , A placement container 3 is provided on the fish nest main body 1. The placement container 3 is embedded in the fish nest main body 1, and a fish attracting material is arranged inside the placement container 3. The fish attracting material can attract fish, so as to increase the attraction of the fish nest main body 1 to fish, facilitating fish to build nests on the fish nest main body 1.

[0042] In this embodiment, the fish attracting material is a permanent magnet bar, which can be arranged inside the placement container 3 or directly placed inside the installation hole 4 (not shown in the attached drawings of this embodiment); the permanent magnet bar can be made of neodymium iron boron magnet, alnico magnet, samarium cobalt magnet or ferrite magnet; in actual use, the staff can adjust the magnetic field strength of the permanent magnet bar by changing its size according to the fish species protected in the environmental restoration area; the magnetic field generated by the permanent magnet can stimulate the immune system of fish, activate immune cells and regulate immune functions to extend the lifespan of fish; in addition, fish have the ability to sense magnetic fields, and the permanent magnet can use this ability of fish to sense magnetic fields to attract fish and correct the migration routes of migratory fish, thus avoiding damage to fish caused by hydraulic structures or ship routes, etc.

[0043] The placement container 3 can be made of materials with stable chemical properties such as stainless steel, PVC (polyvinyl chloride) or PP (polypropylene), so as to reduce the possibility of the placement container 3 being corroded and damaged due to long-term placement in water and extend the service life of the placement container 3.

[0044] Refer to Figure 1 , an installation hole 4 adapted to the placement container 3 is provided on the side wall of the fish nest main body 1. In this embodiment, the extending direction of the installation hole 4 is consistent with the thickness direction of the fish nest main body 1, and the inner wall of the installation hole 4 is in clearance fit with the outer wall of the placement container 3, so that it is convenient for the staff to buckle the placement container 3 into the installation hole 4; a filler 5 is filled between the inner wall of the installation hole 4 and the outer wall of the placement container 3. In this embodiment, the filler 5 can be made of resin, cement slurry, water glass or water glass-cement double slurry material, and the filler 5 can also be made of any material that is insoluble in water and has stable chemical properties, which is not limited in this embodiment.

[0045] Refer to Figure 2 and Figure 3 , the placement container 3 includes a sleeve 31 and a wing ring 32. A plurality of through holes 311 are formed through the sleeve 31. In this embodiment, the through holes 311 are respectively formed on the end walls at both ends of the sleeve 31 in the length direction; the wing ring 32 is arranged around the outer wall of the sleeve 31, and the wing ring 32 and the sleeve 31 are coaxially arranged. The maximum outer diameter of the wing ring 32 is smaller than the inner diameter of the installation hole 4; when using the filler 5 to fill the gap between the placement container 3 and the inner wall of the installation hole 4, the wing ring 32 makes the sleeve 31 and the filler 5 an integral body, so as to increase the stability between the sleeve 31 and the filler 5.

[0046] Refer to Figure 2 and Figure 3, when the size of the fish nest body 1 is relatively large, mechanical tools are required to hoist and place the fish nest body 1; lifting lugs 33 are provided at either end of the sleeve 31, and the lifting lugs 33 protrude from the fish nest body 1; during hoisting, the lifting lugs 33 are suspended on the hook of a crane, and the fish nest body 1 is placed at a designated position by the crane; the wing ring 32 can enhance the anti-pulling ability of the sleeve 31 and reduce the possibility of the placement container 3 falling off from the fish nest body 1; a base 34 protrudes from one end of the sleeve 31 away from the lifting lug 33, and the base 34 is coaxially arranged with the axis of the sleeve 31; the maximum outer diameter of the base 34 is greater than the inner diameter of the mounting hole 4, so that the base 34 can support at the opening of the mounting hole 4, thereby reducing the possibility of the placement container 3 falling off from the mounting hole 4 when the staff hoists the fish nest body 1.

[0047] Refer to Figure 2 and Figure 3 , both ends in the extending direction of the lifting lug 33 are respectively arranged on both sides in the width direction of the sleeve 31, and the lifting lug 33 is detachably connected to the side wall of the sleeve 31; when the fish nest body 1 does not need to be hoisted, the staff can remove the lifting lug 33, thereby reducing the possibility of affecting the water flow velocity near the fish nest body 1 due to the lifting lug 33 protruding outside the fish nest body 1; when the fish nest body 1 needs to be mechanically hoisted, the lifting lug 33 is installed on the sleeve 31, thereby improving the convenience when the staff hoists the fish nest body 1; limiting bolts 35 are arranged on the side walls at both ends in the extending direction of the lifting lug 33, the limiting bolts 35 sequentially pass through the side walls of the lifting lug 33 and the sleeve 31, and the side wall of the lifting lug 33 is clamped between the limiting bolts 35 and the side wall of the sleeve 31 to realize the limit fixation of the limiting bolts 35.

[0048] Refer to Figure 4 and Figure 5 , through grooves 36 are respectively opened at both ends in the extending direction of the side wall of the lifting lug 33, the extending direction of the through grooves 36 is consistent with the length direction of the sleeve 31, and the limiting bolts 35 pass through one end of the through grooves 36 close to the base 34; a gasket 37 is arranged at one end of the bolt head of the limiting bolt 35 close to the sleeve 31, and the gasket 37 can dissolve in water; in this embodiment, the gasket 37 can be made of fine sand wrapped with a biofilm that can dissolve in water, and the gasket 37 can also be made of any solid substance that can dissolve in water, which is not limited in this application; when the fish nest body 1 sinks underwater, the gasket 37 can dissolve in water, so that there is a gap between the bolt head of the limiting bolt 35 and the side wall of the lifting lug 33, thereby enabling the limiting bolt 35 to slide along the extending direction of the through groove 36.

[0049] The limit bolt 35 is made of ferromagnetic metal, and a magnet 38 is embedded at one end of the inner wall of the through groove 36 away from the base 34; when the fish nest body 1 needs to be hoisted, the lifting lug 33 is fixed to the end of the sleeve 31 by the limit bolt 35, and the lifting lug 33 protrudes from the upper surface of the fish nest body 1; when the gasket 37 dissolves, the lifting lug 33 is movably arranged with the sleeve 31, and the limit bolt 35 can attract the magnet 38, so that the lifting lug 33 can move towards the direction close to the base 34 of the sleeve 31, thereby reducing the possibility of the lifting lug 33 protruding from the surface of the fish nest body 1, and further reducing the possibility of affecting the water flow velocity near the fish nest body 1 due to the lifting lug 33 protruding outside the fish nest body 1.

[0050] The implementation principle of Embodiment 1 is that the water-facing energy dissipation surface 11 can block the water flow, so that the direction of the water flow changes, so as to reduce the water flow velocity near the fish nest body 1, thereby facilitating the deposition of nutrients and the stay of fish; after the water flow passes through the water-facing energy dissipation surface 11, a region with a stable and slow water flow velocity can be formed near the back water surface 12 above the fish nest body 1, so as to facilitate the fish nest body 1 to receive the deposited nutrients on the back water surface 12, thereby facilitating the foraging of fish.

[0051] The permanent magnet can use the fish's ability to sense the magnetic field to lure fish and correct the migration routes of migratory fish, thereby avoiding the harm to fish caused by hydraulic structures or ship routes; the side wall of the avoidance groove 2 can block the water flow and slow down the water flow velocity inside the avoidance groove 2, so as to facilitate the stay and spawning of fish in the avoidance groove 2 and improve the comfort of fish when living in the fish nest body 1; the magnetic field generated by the permanent magnet can stimulate the fish body's immune system, activate immune cells and regulate immune functions, so as to extend the lifespan of fish, so as to facilitate the staff to repair the water ecological project.

[0052] Embodiment 2

[0053] The difference between this embodiment and Embodiment 1 is that the fish attracting material is a solid slow-release fish attracting pheromone, and the solid slow-release fish attracting pheromone is arranged inside the sleeve 31; the fish attracting pheromone includes feeding pheromone and / or sex pheromone and / or safety pheromone, and the feeding pheromone and / or sex pheromone and / or safety pheromone are sealed in a solid substance; in this embodiment, substances such as gelatin and sugars (fructose, sucrose, brown sugar) can be mixed with the pheromone, so that the pheromone is sealed in the solid substance; when the fish nest sinks to the bottom of the water, the sugars dissolve slowly in water, and after the solid substance dissolves, the pheromone can be slowly released, and the pheromone flows into the river from the through holes 311 to attract the nearby fish, so as to achieve a better fish attracting effect.

[0054] Embodiment 3

[0055] The difference between this embodiment and Embodiment 1 and Embodiment 2 is that the fish-attracting material uses solidified luminous bacteria. The solidified luminous bacteria are arranged inside the sleeve 31. After sinking to the bottom of the water, the blue-green light emitted by the luminous bacteria is used to attract fish. In this embodiment, the materials of the sleeve 31 and the base 34 are made of transparent PVC (polyvinyl chloride) material or PP (polypropylene) material, so that the light emitted by the solidified luminous bacteria can pass through the end wall of the sleeve 31 to attract the surrounding fish.

[0056] In this embodiment, the solidified luminous bacteria are Vibrio qinghaiensis, which are immobilized by agar, brown sugar, fructose, etc. After the water quality deteriorates, the light emitted by the luminous bacteria will be inhibited. The staff can judge the water quality situation near the fish nest main body 1 through the intensity of the light emitted by the solidified luminous bacteria, so that the staff can timely monitor the environment near the fish nest main body 1 and adjust the environment, so that the fish can always survive in a suitable environment, improve the biodiversity, and achieve the effect of ecological restoration.

[0057] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A bionic fish nest with the function of water ecological restoration, characterized in that: The invention comprises a fish nest main body (1), wherein the fish nest main body (1) is arranged in a water drop streamline shape, and the two sides of the fish nest main body (1) are respectively a water-facing energy dissipation surface (11) and a water-receiving surface (12), wherein the water-facing energy dissipation surface (11) is used to increase water flow resistance; the fish nest main body (1) is provided with a plurality of avoidance grooves (2), wherein the plurality of avoidance grooves (2) are all opened on the water-receiving surface (12) of the fish nest main body (1); and further comprises a placement container (3), wherein fish attracting material is arranged inside the placement container (3), and the fish attracting material is used to attract fish; The side wall of the fish nest body (1) is provided with a mounting hole (4) adapted to fit the placement container (3), the inner wall of the mounting hole (4) is clearance-matched with the outer wall of the placement container (3), and a filler (5) is filled between the inner wall of the mounting hole (4) and the outer wall of the placement container (3); The placement container (3) comprises a sleeve (31) and a wing ring (32); the fish attracting material is arranged in the sleeve (31); the sleeve (31) is penetrated by a plurality of through holes (311); the wing ring (32) is arranged around the outer wall of the sleeve (31), and the wing ring (32) and the sleeve (31) are coaxially arranged; the maximum outer edge diameter of the wing ring (32) is smaller than the inner diameter of the mounting hole (4).

2. The bionic fish nest with the function of water ecological restoration according to claim 1, characterized in that: The surface of the fish nest main body (1) is provided with a plurality of convex patterns, and the plurality of convex patterns are evenly distributed along the extension direction of the fish nest main body (1).

3. The bionic fish nest with the function of water ecological restoration according to claim 1 is characterized in that: The mounting hole (4) is provided through a side wall of the fish nest body (1) in a thickness direction, and the extension direction of the mounting hole (4) is consistent with the thickness direction of the fish nest body (1); a base (34) is provided protruding from the end wall of either end of the sleeve (31), and the base (34) is coaxially arranged with the axis of the sleeve (31); the maximum outer edge diameter of the base (34) is greater than the inner diameter of the mounting hole (4), and a lifting ear (33) is provided at one end of the sleeve (31) away from the base (34), and the lifting ear (33) protrudes from the fish nest body (1).

4. The bionic fish nest with the function of water ecological restoration according to claim 3, characterized in that: The two ends of the lifting ear (33) in the extension direction are respectively arranged on both sides of the width direction of the sleeve (31), and the lifting ear (33) is detachably connected to the side wall of the sleeve (31). The side walls at both ends of the lifting ear (33) in the extension direction are both provided with limiting bolts (35), and the limiting bolts (35) are sequentially passed through the side walls of the lifting ear (33) and the sleeve (31).

5. The bionic fish nest with the function of water ecological restoration according to claim 4, characterized in that: Both ends of the side wall of the ear (33) are provided with through grooves (36), and the extension direction of the through groove (36) is consistent with the length direction of the sleeve (31). The limiting bolt (35) is passed through the through groove (36) at one end close to the base (34); the head of the limiting bolt (35) is provided with a gasket (37) at one end close to the sleeve (31), and the gasket (37) can be dissolved in water; the limiting bolt (35) is made of ferromagnetic metal, and a magnet (38) is embedded in the inner wall of the through groove (36) at one end away from the base (34).

6. A biomimetic fish nest with a water ecological restoration function according to any one of claims 1 to 5, characterized in that: The fish attracting material is a permanent magnet rod, and the permanent magnet rod is arranged inside the placement container (3).

7. A bionic fish nest with a water ecological restoration function according to any one of claims 1 to 5, characterized in that: The fish attracting material uses a solid slow-release fish attracting pheromone. The fish attracting pheromone includes a feeding pheromone and / or a sex pheromone and / or a safety pheromone, and the feeding pheromone and / or the sex pheromone and / or the safety pheromone are sealed in a solid substance; the solid slow-release fish attracting pheromone is arranged in the placement container (3).

8. A bionic fish nest with a water ecological restoration function according to any one of claims 1 to 5, characterized in that: The sleeve (31) is made of a transparent plastic material, the fish attracting material uses solidified luminescent bacteria, and the solidified luminescent bacteria are arranged in the sleeve (31).

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