Composite artificial fish nest

Abstract

The utility model discloses a composite artificial fish nest which comprises a spawning area, a planting area and a sheltering area. The spawning area is arranged at the top of the planting area, and the sheltering area is arranged at the bottom of the planting area; the oviposition area comprises a protection box, an oviposition plate and an adjusting assembly; openings are formed in the two sides of the protection box, the oviposition plate is movably connected into the protection box, and the adjusting assembly is connected with the protection box and used for adjusting the position of the oviposition plate; adhesion substrates are arranged on the egg laying plate and at the bottom of the protection box; the planting area comprises a planting plate, the planting plate is connected to the bottom of the protection box, a circle of planting groove is formed in the position, located on the outer side of the protection box, of the planting plate, and the planting groove is used for planting aquatic plants; the sheltering area comprises a sheltering body, the sheltering body is fixedly connected to the bottom of the planting plate, and a bionic cave is formed in the sheltering body and is of an arc-shaped channel structure. Through the vertical layered structure of the top spawning area, the middle planting area and the bottom sheltering area, the three-dimensional ecological function of simulating a natural water area is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of biomimetic nest technology, specifically a composite artificial fish nest. Background Technology

[0002] In the fields of aquaculture and aquatic ecosystem protection, fish reproductive efficiency and habitat quality are core elements for maintaining biodiversity and sustainable industrial development. With the deterioration of global aquatic environments (such as water pollution, riverbed hardening, and wetland shrinkage), natural fish breeding grounds have significantly decreased, leading to the decline of wild populations and increased aquaculture costs. Artificial fish nests, as key facilities simulating natural breeding environments, are widely used in ecological restoration projects (such as river and lake stock enhancement), aquaculture farms, and home aquariums. Their core objective is to improve fish reproductive success rates while optimizing aquatic ecosystems by constructing suitable spawning, hatching, and juvenile shelter spaces.

[0003] In recent years, with the advancement of the "green mountains and clear waters" ecological concept and the large-scale upgrading of aquaculture, the market has placed higher demands on the functional integration, environmental adaptability, and intelligent level of artificial fish nests. An ideal artificial fish nest needs to simultaneously meet multiple requirements such as "diversified spawning carriers, ecological water purification, and natural habitat" to adapt to the reproductive habits of different fish species (such as grass-egg-laying fish, sinking-egg-laying fish, and bottom-dwelling fish) and integrate into the aquatic ecological cycle system. However, traditional artificial fish nests have a simple structure and are generally only used to provide spawning sites, lacking consideration for the fish's growth environment. This results in such artificial fish nests being only suitable for fish in artificially aquaculture waters and not for fish in natural environments.

[0004] Patent application CN202420561805.2 discloses an artificial fish nest that facilitates the hatching of fish eggs. This artificial fish nest only includes basic structures such as a base, hatching plate, side plates, and support tubes, focusing mainly on the angle adjustment of the hatching plate. This type of artificial fish nest only provides a spawning site and lacks consideration for the growth environment of fish, making it suitable only for fish in artificially aquatic environments and not for fish in natural environments. Utility Model Content

[0005] The purpose of this invention is to provide a composite artificial fish nest to solve the following technical problems mentioned in the background art:

[0006] Traditional artificial fish nests have a simple structure and are generally only used to provide spawning sites. They lack consideration for the growth environment of fish, which means that these artificial fish nests are only suitable for fish in artificially aquatic waters and not for fish in the natural environment.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A composite artificial fish nest includes a spawning area, a planting area, and a shelter area. The spawning area is located at the top of the planting area, and the shelter area is located at the bottom of the planting area. The spawning area includes a protective box, a spawning plate, and an adjustment component. The protective box has openings on both sides, the spawning plate is movably connected inside the protective box, and the adjustment component is connected to the protective box and is used to adjust the position of the spawning plate. An adhesive substrate is provided on the spawning plate and at the bottom of the protective box. The planting area includes a planting tray connected to the bottom of the protective box, and a planting trough is provided on the planting tray outside the protective box for planting aquatic plants. The shelter area includes a shelter body fixed to the bottom of the planting tray, and the shelter body has a biomimetic cave with an arc-shaped channel structure.

[0009] Furthermore, retaining rings are provided on the egg-laying plate and at the bottom of the protective box, and the adhesive substrate is placed on the retaining rings.

[0010] Furthermore, the adjustment assembly includes a fixed frame, a movable frame, a first bracket, a second bracket, an adjustment shaft, an adjustment head, and a locking bolt; the fixed frame is fixedly connected to one side of the top of the protective box, the movable frame is movably connected to one side of the bottom of the protective box, the oviposition plate is fixedly connected to the movable frame, the adjustment shaft is slidably connected to the fixed frame, and the first bracket and the second bracket are hinged to each other; one end of the first bracket is hinged to the movable frame, and the other end is slidably connected to the fixed frame; one end of the second bracket is slidably connected to the movable frame, and the other end is hinged to the fixed frame; the adjustment head is slidably connected to the top of the protective box, and the bottom of the adjustment head is hinged to the adjustment shaft; the locking bolt is used to lock the adjustment head and the protective box.

[0011] Furthermore, a root fixing plate is provided inside the planting tray, and the root fixing plate has several through holes.

[0012] Furthermore, the inner wall of the biomimetic cave passage is a smooth curved surface, with a passage width of 3-8cm and a depth of 5-15cm.

[0013] Furthermore, a counterweight plate is connected to the bottom of the shelter.

[0014] Furthermore, the bottom of the counterweight plate is provided with anti-slip texture.

[0015] Furthermore, the surface of the shelter is coated with a reflective material.

[0016] Furthermore, the shelter has a porosity of 30%-50%.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention achieves a three-dimensional ecological function that simulates natural waters through a vertically layered structure consisting of a top spawning area, a middle planting area, and a bottom shelter area. Traditional fish nests have a single function and cannot reproduce the natural breeding environment.

[0019] This invention features a structure in which the spawning plate is movably connected to the protective box and the position of the spawning plate is controlled by an adjustable component. This structure enables the adjustment of the spawning space according to the size or habits of the fish, solving the problem that traditional fixed-spacing fish nests cannot adapt to diverse breeding needs.

[0020] This invention, through the structure of the annular planting trough on the outer side of the planting tray, enables the mass planting of aquatic plants and the construction of a middle-layer purification and shielding layer, solving the problems of easy water pollution and lack of natural shielding in the spawning area.

[0021] This invention utilizes a biomimetic cave with an arc-shaped channel structure on the shelter to simulate rock crevices or caves in natural waters, providing a safe habitat for fish and solving the problems of lack of shelter and low survival rate for juvenile and bottom-dwelling fish. Attached Figure Description

[0022] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0023] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the spawning area of ​​this utility model;

[0025] Figure 4 This is a side view of the spawning area of ​​this utility model.

[0026] Markings in the diagram: 1-spawning area, 2-planting area, 3-shelter area, 4-adjustment component, 5-root fixing plate, 6-shelter, 7-planting tray, 8-planting trough, 9-spawning plate, 10-protection box, 11-fixing frame, 12-adjustment shaft, 13-first support, 14-second support, 15-movable frame, 16-retaining ring, 17-locking bolt, 18-adjustment head. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example:

[0029] A composite artificial fish nest includes a spawning area 1, a planting area 2, and a shelter area 3. The spawning area 1 is located at the top of the planting area 2, and the shelter area 3 is located at the bottom of the planting area 2. The spawning area 1 includes a protective box 10, a spawning plate 9, and an adjustment component 4. The protective box 10 has openings on both sides, the spawning plate 9 is movably connected inside the protective box 10, and the adjustment component 4 is connected to the protective box 10 and is used to adjust the position of the spawning plate 9. An adhesive substrate is provided on the spawning plate 9 and at the bottom of the protective box 10. The planting area 2 includes a planting tray 7, which is connected to the bottom of the protective box 10. A planting trough 8 is provided on the planting tray 7 outside the protective box 10, and the planting trough 8 is used to plant aquatic plants. The shelter area 3 includes a shelter body 6, which is fixed to the bottom of the planting tray 7. The shelter body 6 has a biomimetic cave with an arc-shaped channel structure.

[0030] The protective tank 10 has openings on both sides to allow fish to enter and exit, creating a stable spawning environment. The adhesive substrate on the surface of the spawning plate 9 and the bottom of the protective tank 10 provides attachment points for the fish eggs, improving the hatching rate. The adhesive substrate is selected based on the main fish species. For example, the eggs of carp, crucian carp, and redfin culter are grass-adhesive and need to attach to soft, porous plant surfaces; therefore, soft media such as aquatic plants, reeds, and palm flakes are selected as the adhesive substrate. The sinking, adhesive eggs of bottom-dwelling fish need to attach to hard surfaces; therefore, hard media such as sand, pebbles, and bark are selected as the adhesive substrate. The adjustment component 4 can adjust the position of the spawning plate 9, allowing for adjustment of the appropriate spawning area according to the size of the fish. The planting trough 8 on the planting tray 7 is used to plant aquatic plants. These plants absorb nitrogen and phosphorus, release oxygen, purify the water, and improve the breeding environment. Simultaneously, the aquatic plants extend outwards, covering the spawning area 1, simulating natural aquatic plant cover, reducing fish stress, and improving breeding success rate. The arc-shaped passageway on shelter 6 simulates a natural cave, providing hiding space for fish. Furthermore, some fish species, such as catfish and loaches, require a cave environment for spawning and raising their young. This biomimetic cave structure expands its reproductive capabilities and can accommodate more fish species. This composite artificial fish nest can simulate the three-dimensional ecological structure of natural waters, utilizing shallow areas for spawning, planting aquatic plants in the middle and lower layers to purify the water, and providing a living environment at the bottom, thus creating an excellent breeding environment for fish.

[0031] In a preferred embodiment, a retaining ring 16 is provided on the spawning plate 9 and the bottom of the protective box 10, and the adhesive substrate is disposed on the retaining ring 16. The retaining ring 16 is used to limit the displacement of the adhesive substrate and prevent it from floating or scattering in the water flow.

[0032] In a preferred embodiment, the adjustment assembly 4 includes a fixed frame 11, a movable frame 15, a first support 13, a second support 14, an adjustment shaft 12, an adjustment head 18, and a locking bolt 17. The fixed frame 11 is fixedly connected to one side of the top of the protective box 10, the movable frame 15 is movably connected to one side of the bottom of the protective box 10, the oviposition plate 9 is fixedly connected to the movable frame 15, the adjustment shaft 12 is slidably connected to the fixed frame 11, and the first support 13 and the second support 14 are hinged to each other. One end of the first support 13 is hinged to the movable frame 15, and the other end is slidably connected to the fixed frame 11. One end of the second support 14 is slidably connected to the movable frame 15, and the other end is hinged to the fixed frame 11. The adjustment head 18 is slidably connected to the top of the protective box 10, and the bottom of the adjustment head 18 is hinged to the adjustment shaft 12. The locking bolt 17 is used to lock the adjustment head 18 and the protective box 10.

[0033] Specifically, during adjustment, loosen the locking bolt 17, move the adjusting head 18, which in turn moves the adjusting shaft 12. The adjusting shaft 12 then tilts the first support 13, causing the first support 13 and the second support 14 to open or close. The first support 13 and the second support 14 then move the movable frame 15 up and down, which in turn moves the spawning plate 9, thus adjusting the height of the spawning plate 9. By adjusting the height of the spawning plate 9, fish of various sizes can spawn. When the fish are larger, the spawning plate 9 is adjusted downwards, providing more space for larger fish to spawn. It should be noted that at this time, the gap between the bottom of the protective box 10 and the spawning plate 9 is small, and this space is only suitable for small fish to spawn. When the fish are of moderate or small size, the spawning plate 9 can be adjusted upwards to the middle position of the protective box 10. At this time, the gap between the spawning plate 9 and the top of the protective box 10 is moderate, and the gap between the bottom of the protective box 10 and the spawning plate 9 is also moderate. The two spaces can be used to supply the fish with eggs.

[0034] In a preferred embodiment, a root fixing plate 5 is provided inside the planting tray 7, and the root fixing plate 5 has several through holes. The root fixing plate 5 is used to prevent aquatic plants from being washed away by the water flow and can effectively fix the aquatic plants.

[0035] In a preferred embodiment, the inner wall of the biomimetic cave passage is a smooth curved surface, with a width of 3-8 cm and a depth of 5-15 cm. The smooth curved surface reduces frictional resistance for fish entering and exiting the cave, lowering the risk of surface injury, and also prevents fish eggs from adhering to the rough wall and hindering hatching. The width is adjusted according to the fish species: 3-5 cm for small fish and 5-8 cm for medium-sized fish. The depth of 5-15 cm provides sufficient depth for fish to hide; shallow caves of 5-10 cm are suitable for juvenile and small fish, while deep caves of 10-15 cm are suitable for adult fish.

[0036] In a preferred embodiment, a counterweight plate is connected to the bottom of the shelter 6. The counterweight plate increases the weight at the bottom, preventing the fish nest from swaying or shifting due to water flow or fish swimming. The counterweight plate can be designed as a flat plate or toothed plate to improve its stability in different environments. Further optimized, the bottom of the counterweight plate is provided with anti-slip texture. The anti-slip texture is wavy or grid-like, and it increases the contact resistance between the counterweight plate and the bottom of the aquarium or natural substrate, preventing the fish nest from sliding or shifting due to water flow or fish swimming.

[0037] In a preferred embodiment, the surface of the shelter 6 is coated with a reflective material, such as a TiO2 photocatalytic coating. Natural light is used to inhibit the growth of anaerobic bacteria and maintain an oxidizing environment in the water.

[0038] In a preferred embodiment, the shelter 6 has a porosity of 30%-50%. This porosity ensures water can flow through the pores of the shelter 6, forming a circulation with the aquatic plants in the planting area 2 and preventing stagnant water accumulation at the bottom. The pores provide attachment space for algae and microorganisms, forming a micro-biofilm that aids in water purification and provides natural food for juvenile fish. The shelter 6 can be manufactured using waste ceramic granules, straw fiber, shell powder, and biological binders.

[0039] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite artificial fish nest, characterized by: It includes an spawning area (1), a planting area (2), and a shelter area (3); the spawning area (1) is located at the top of the planting area (2), and the shelter area (3) is located at the bottom of the planting area (2); The spawning area (1) includes a protective box (10), a spawning plate (9), and an adjustment component (4); the protective box (10) has openings on both sides, the spawning plate (9) is movably connected inside the protective box (10), the adjustment component (4) is connected to the protective box (10), and the adjustment component (4) is used to adjust the position of the spawning plate (9); an adhesive substrate is provided on the spawning plate (9) and the bottom of the protective box (10); The planting area (2) includes a planting tray (7), which is connected to the bottom of the protective box (10). A planting trough (8) is provided on the planting tray (7) outside the protective box (10). The planting trough (8) is used to plant aquatic plants. The shelter area (3) includes a shelter (6), which is fixed to the bottom of the planting tray (7). A biomimetic cave is provided on the shelter (6), which has an arc-shaped channel structure.

2. The composite artificial fish nest according to claim 1, wherein: A retaining ring (16) is provided on the egg-laying plate (9) and the bottom of the protective box (10), and the adhesive substrate is provided on the retaining ring (16).

3. The composite artificial fish nest according to claim 1, wherein: The adjustment assembly (4) includes a fixed frame (11), a movable frame (15), a first bracket (13), a second bracket (14), an adjustment shaft (12), an adjustment head (18), and a locking bolt (17); the fixed frame (11) is fixedly connected to one side of the top of the protective box (10), the movable frame (15) is movably connected to one side of the bottom of the protective box (10), the oviposition plate (9) is fixedly connected to the movable frame (15), the adjustment shaft (12) is slidably connected to the fixed frame (11), and the first bracket (13) is fixedly connected to the second bracket (14). The first bracket (13) is hinged to the second bracket (14); one end of the first bracket (13) is hinged to the movable frame (15), and the other end is slidably connected to the fixed frame (11); one end of the second bracket (14) is slidably connected to the movable frame (15), and the other end is hinged to the fixed frame (11); the adjusting head (18) is slidably connected to the top of the protective box (10), and the bottom of the adjusting head (18) is hinged to the adjusting shaft (12); the locking bolt (17) is used to lock the adjusting head (18) and the protective box (10).

4. The composite artificial fish nest according to claim 1, wherein: The planting tray (7) is equipped with a root fixing plate (5), and the root fixing plate (5) has several through holes.

5. A composite artificial fish nest according to claim 1, characterized in that: The biomimetic cave passage has a smooth curved inner wall, with a width of 3-8cm and a depth of 5-15cm.

6. The composite artificial fish nest according to claim 1, wherein: The bottom of the shelter (6) is connected to a counterweight plate.

7. The composite artificial fish nest according to claim 6, wherein: The bottom of the counterweight plate has anti-slip texture.

8. The composite artificial fish nest according to claim 1, wherein: The surface of the shelter (6) is coated with a reflective material.

9. The composite artificial fish nest according to claim 1, wherein: The shelter (6) has a porosity of 30%-50%.

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