A native fish hatching and breeding system

Abstract

This utility model discloses a native fish hatching and rearing system, belonging to the field of fish fry farming technology. It includes a hatching tank with two adjustable tracks, on which hatching trays are mounted. A water inlet pipe with a water inlet valve is located on the left side of the hatching tank. A screen is located near the right side of the hatching tank, and a water level control pipe is located to the right of the screen. A drain pipe is located below the hatching tank, corresponding to the water level control pipe. An aeration mechanism is also installed within the hatching tank. This utility model continuously adds water to the hatching tank through the water inlet pipe, and excess water is discharged through the water level control pipe and the drain pipe, ensuring continuous water circulation within the hatching tank. The aeration mechanism aerates the hatching trays during the fry hatching process, which is beneficial for fry hatching.

Description

Technical Field

[0001] This utility model relates to the field of fish fry breeding technology, and in particular to a hatching and breeding system for native fish species. Background Technology

[0002] Native fish species are an important part of the ecosystem in specific regions, playing a vital role in maintaining ecological balance, protecting biodiversity, and conducting related scientific research. As a key component of the ecosystem, native fish species possess unique biological habits, genetic diversity, and ecological value; however, due to factors such as habitat destruction, water pollution, invasive alien species, and overfishing, most species face the risk of endangerment or extinction.

[0003] Currently, there are no suitable facilities or equipment for hatching native plateau fish species such as the spotted naked carp and the Yellow River naked wrasse. Native fish are primarily hatched in incubation bottles, which are cylindrical containers with a water pipe at the bottom for flushing. The eggs are agitated by the water flow, and the hatched fry flow out through the top outlet. However, incubation bottles are not suitable for the entire hatching process of plateau fish species like the spotted naked carp and the Yellow River naked wrasse. Incubation bottles were originally used for hatching whitefish. Plateau fish fry are small, fragile, and have poor swimming ability; they have difficulty flowing through the top outlet and are prone to suffocating after hatching, trapped in unhatched eggs, leading to mass mortality. Utility Model Content

[0004] The purpose of this invention is to provide a native fish hatching and breeding system to solve the problems described in the background art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model discloses a native fish hatching and breeding system, including a hatching tank with two adjustable tracks inside the hatching tank and hatching trays on the two tracks. A water inlet pipe with a water inlet valve is provided on the left side of the hatching tank. A screen is provided near the right side of the hatching tank, and a water level control pipe is provided to the right of the screen. A drain pipe is provided below the hatching tank at a position corresponding to the water level control pipe. An aeration mechanism is also provided inside the hatching tank.

[0007] Furthermore, several support rods are provided between the front and rear side walls of the incubation tank, and two tracks are movably mounted on the support rods.

[0008] Furthermore, the track is provided with a limiting groove that matches the support rod.

[0009] Furthermore, the aeration mechanism includes an air inlet pipe, an air delivery pipe is provided on the air inlet pipe, a first gas valve is provided on the side of the air delivery pipe near the air inlet pipe, and multiple aeration pipes are provided on the other side of the air delivery pipe, with a second gas valve provided on the end of each aeration pipe near the air delivery pipe.

[0010] Furthermore, the number of gas supply pipes is set to two, and each gas supply pipe is connected to four aeration pipes.

[0011] Furthermore, the aeration pipe is connected to the support rod via a lifting component.

[0012] Furthermore, the bottom surface of the incubation tray is evenly provided with several small holes that allow fish fry to pass through.

[0013] Furthermore, the inner wall of the incubation tank is provided with slots, and the edge of the screen is disposed within the slots.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] This invention lays the fish eggs flat in the hatching tray, and with the addition of oxygenation in the hatching tank, the fish eggs are prevented from accumulating and lacking oxygen. After hatching, the fry can quickly fall into the hatching tank through the small holes at the bottom of the hatching tray. The height of the oxygen supply facilities in the hatching tank is adjustable, and there is ample, undisturbed resting space for the fry at the bottom. This avoids the drawbacks of the hatching bottles used in the past, where the fry of highland fish are small and have weak swimming power, and they suffocate when they are wrapped in unhatched eggs. This greatly improves the survival rate of the fry. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a top view of the native fish hatching and breeding system of this utility model;

[0018] Figure 2 This is a cross-sectional view of the native fish hatching and rearing system of this utility model;

[0019] Figure 3 This is a side view of the track of this utility model;

[0020] Figure 4 This is a schematic diagram showing the positional relationship between the gas transmission pipeline, aeration pipe, and second gas valve of this utility model.

[0021] Explanation of reference numerals in the attached diagram: 1. Hatching tank; 2. Support rod; 3. Track; 3-1. Limiting groove; 4. Water inlet pipe; 5. Water inlet valve; 6. Air inlet pipe; 7. Air delivery pipe; 8. First gas valve; 9. Aeration pipe; 10. Second gas valve; 11. Screen; 12. Water level control pipe; 13. Hatching tray; 13-1. Small hole; 14. Lifting component; 15. Drainage pipe. Detailed Implementation

[0022] like Figure 1-4 As shown, a native fish hatching and rearing system includes a hatching tank 1. Three support rods 2 are connected between the front and rear side walls of the hatching tank 1. Two adjustable tracks 3 are installed on the support rods 2. Each track 3 has a limiting groove 3-1 that matches the support rod 2. The tracks 3 can move along the support rods 2, thereby adjusting the distance between the two tracks 3 to facilitate support of the hatching trays 13. The hatching trays 13 are placed on the two tracks 3, with the edges of the hatching trays 13 resting on the tracks 3. A water inlet valve 5 is provided on the left side of the hatching tank 1. The inlet pipe 4 is provided. A screen 11 is installed near the right side inside the hatching tank 1. Slots are installed on the front and rear inner walls of the hatching tank 1, and the edge of the screen 11 is inserted into the slot. A water level control pipe 12 is provided on the right side of the screen 11. A support base for inserting the water level control pipe 12 is connected to the bottom of the hatching tank 1. A drain pipe 15 is connected below the support base. The water level control pipe 12 can be made in different lengths. By inserting water level control pipes 12 at different heights on the support base, the water level can be controlled. An aeration mechanism is also provided inside the hatching tank 1. Specifically, the screen 11 is located at the end of the hatching tank 1 and includes a removable metal plate. The metal plate is perforated and covered with a layer of sieve roll, which allows water to pass through smoothly but prevents fish fry from escaping from the hatching tank 1.

[0023] The aeration mechanism includes an air inlet pipe 6, two air delivery pipes 7 connected to the air inlet pipe 6, a first gas valve 8 installed on one side of the air delivery pipe 7 near the air inlet pipe 6, and four aeration pipes 9 connected to the other side of the air delivery pipe 7. A second gas valve 10 is installed on one end of each aeration pipe 9 near the air delivery pipe 7. The aeration volume can be controlled by the first gas valve 8 and the second gas valve 10.

[0024] The aeration pipe 9 is connected to the support rod 2 via a lifting member 14; the lifting member 14 can be a rope, which is used to lift the aeration pipe 9 upward and fix it to the support rod 2, and the rope can be used to fix the aeration pipe 9 at any height of the hatching tank 1.

[0025] The bottom surface of the incubation tray 13 is evenly provided with several small holes 13-1 that allow fish fry to pass through.

[0026] The working process of this utility model is as follows:

[0027] First, adjust the spacing between the two tracks 3 according to the size of the hatching tray 13. Then, place the hatching tray 13 on the two tracks 3. Next, use eight aeration pipes 9 for aeration. After the native fish eggs hatch in the hatching tray 13, the fry leak through the small holes 13-1 into the hatching tank 1. Then, lift the aeration pipes 9 upwards, so that the aeration pipes 9 are away from the bottom of the hatching tank 1, so that the fry sink to the bottom of the hatching tank 1. The fry can continuously swim upwards from the bottom of the hatching tank 1. Water is continuously added to the hatching tank 1 through the water inlet pipe 4. Water above the predetermined water level is discharged through the water level control pipe 12 and the drain pipe 15, so that the water in the hatching tank 1 is constantly circulated. The fry are intercepted by the screen 11 and will not be discharged with the water.

[0028] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A native fish hatching rearing system, characterised in that: The system includes an incubation tank (1), which has two adjustable tracks (3) and incubation trays (13) on the tracks (3). An inlet pipe (4) with an inlet valve (5) is provided on the left side of the incubation tank (1). A screen (11) is provided near the right side of the incubation tank (1). A water level control pipe (12) is provided to the right of the screen (11). A drain pipe (15) is provided below the incubation tank (1) at a position corresponding to the water level control pipe (12). An aeration mechanism is also provided in the incubation tank (1).

2. The indigenous fish hatching and rearing system according to claim 1, characterized in that: Several support rods (2) are provided between the front and rear side walls of the incubation tank (1), and two tracks (3) are movably mounted on the support rods (2).

3. The indigenous fish hatching and rearing system according to claim 2, wherein: The track (3) is provided with a limiting groove (3-1) that matches the support rod (2).

4. The indigenous fish hatching and rearing system according to claim 2, wherein: The aeration mechanism includes an air inlet pipe (6), an air delivery pipe (7) is provided on the air inlet pipe (6), a first gas valve (8) is provided on one side of the air delivery pipe (7) near the air inlet pipe (6), and multiple aeration pipes (9) are provided on the other side of the air delivery pipe (7), with a second gas valve (10) provided on one end of each aeration pipe (9) near the air delivery pipe (7).

5. The native fish hatching and rearing system according to claim 4, characterized in that: The number of gas supply pipes (7) is set to two, and each gas supply pipe (7) is connected to four aeration pipes (9).

6. The native fish hatching and rearing system according to claim 4, characterized in that: The aeration pipe (9) is connected to the support rod (2) via the lifting member (14).

7. The native fish hatching and rearing system according to claim 1, characterized in that: The bottom surface of the incubation tray (13) is evenly provided with several small holes (13-1) that allow fish fry to pass through.

8. The native fish hatching and rearing system according to claim 1, characterized in that: The inner wall of the incubation tank (1) is provided with a slot, and the edge of the screen (11) is disposed in the slot.

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