CN219108483U

CN219108483U - Preset net cage device for fish spawning pond

Info

Publication number: CN219108483U
Application number: CN202223320387.8U
Authority: CN
Inventors: 傅建军; 董在杰; 朱文彬; 王兰梅; 罗明坤
Original assignee: Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences
Current assignee: Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-06-02
Anticipated expiration: 2032-12-09

Abstract

The utility model relates to a preset net cage device of a fish spawning pond, which comprises a fish spawning pond and a net cage; the net cage consists of a cylindrical net cage body, a dense net, tethers and sinking steel pipes, wherein the cylindrical net cage body is arranged inside a fish spawning pond, a plurality of tethers are arranged at the edge of the upper end of the cylindrical net cage body, and the sinking steel pipes are paved at the bottom of the cylindrical net cage body. The cylindrical net cage body is designed to be open above, so that the operation of breeding parent fish is facilitated; by attaching the dense net, the damage of parent fish in the net lifting process can be reduced; the net cage can be fixed at the upper end of the spawning pond by arranging the tether above the cylindrical net body; and the bottom steel pipes are distributed at the bottom, so that the shape of the net cage is maintained, and the parent fish is guaranteed to have sufficient movable space. The operation is convenient, and the method is suitable for temporary rearing, catching and spawning promotion of parent fishes in artificial propagation of fishes, and especially can meet the requirement of arranging a net cage in a fish spawning pond.

Description

Preset net cage device for fish spawning pond

Technical Field

The utility model relates to a preset net cage device of a fish spawning pond, which is suitable for temporarily raising and catching parent fish in artificial fish reproduction, in particular to a preset net cage in a spawning pond of a reproduction field, provides convenience for spawning promotion of parent fish, and belongs to the technical field of aquaculture matched equipment.

Background

Facilities and demands such as spawning ponds are usually arranged in an aquaculture farm or a breeding farm, and in the development of artificial breeding practice, water is usually stored in the spawning ponds directly and is used for temporary culture and breeding after hormone injection of parent fish; and after water flow stimulation for a certain time in the spawning pond, the parent fish of the fish needs to be caught again, and hormone is injected again to finish artificial spawning and reproduction. At present, conventional fishes such as four large fishes artificially bred mostly adopt a cylindrical cement spawning pond, are influenced by factors such as water temperature and hormone, parent fishes in the spawning pond are always active, and the conventional fishing net is utilized to catch the parent fishes in the spawning pond, so that the damage probability to the parent fishes is increased, and the problems of individual flee and the like are frequently encountered. Therefore, the method has important practical significance for designing facilities and tools for facilitating parent fish catching and spawning promotion in spawning ponds in artificial fish propagation.

Disclosure of Invention

The utility model aims to overcome the defects, and provides a preset net cage device of a fish spawning pond, which is suitable for temporarily raising and catching parent fish in artificial fish propagation, and particularly can be used for presetting a net cage in the spawning pond of a propagation field, thereby providing convenience for spawning promotion of parent fish.

According to the technical scheme provided by the utility model: a preset net cage device of a fish spawning pond, which comprises a fish spawning pond and a net cage; the net cage consists of a cylindrical net cage body, a dense net, tether ropes and a sinking steel pipe, wherein the cylindrical net cage body is arranged inside a fish spawning pond, a plurality of tether ropes are arranged at the edge of the upper end of the cylindrical net cage body, the upper edge of the cylindrical net cage body and the fish spawning pond are fixed through the tether ropes, the sinking steel pipe is paved at the bottom of the cylindrical net cage body, so that the cylindrical net cage body is fully stretched in the fish spawning pond, and the parent fish can freely move in the net cage; the bottom and the periphery of the cylindrical net cage body are made of a plurality of net sheets, and the upper part of the cylindrical net cage body is opened for facilitating the operation of breeding parent fish; the inner side of the cylindrical net body is additionally provided with a dense net for catching parent fish, so that damage to the fish body in the net lifting process is reduced.

As a further improvement of the utility model, the bottom steel pipe is a rod-shaped steel pipe or an arc-shaped steel pipe; the diameter of the sinking steel pipe is as follows: 2-3cm.

As a further improvement of the present utility model, the rod-shaped steel pipe has a length of: 7-9m, the length of the arc-shaped steel pipe is as follows: 3-4m.

As a further improvement of the utility model, the diameter of the cylindrical net cage is as follows: 8-10m, the height is: 1.5-2.0m; the meshes are made of polyethylene materials.

As a further improvement of the utility model, the dense net is made of polyethylene material and is attached to one side of the inner part of the cylindrical net cage.

As a further improvement of the present utility model, the tether is a nylon or polyethylene rope.

As a further improvement of the utility model, the mesh specification of the mesh used for the cylindrical net cage body is as follows: 5-10cm.

As a further improvement of the present utility model, the mesh size of the mesh used for the dense mesh is: 5-10 meshes.

As a further improvement of the present utility model, the length of the tether is: 30-50cm.

Compared with the prior art, the utility model has the following advantages:

the cylindrical net cage body is designed to be open above, so that spawning induction and temporary culture of parent fishes can be conveniently propagated; by attaching the dense net, the damage of parent fish in the net lifting process can be reduced; the net cage can be fixed at the upper end of the spawning pond by arranging the tether above the cylindrical net cage body, so that the water space of the spawning pond is fully utilized; and the bottom steel pipes are distributed at the bottom, so that the shape of the net cage is maintained, and the parent fish is guaranteed to have sufficient movable space. The fish spawning pond is simple in structure, easy to manufacture and convenient to operate, is suitable for temporary rearing, catching and spawning promotion of parent fish in artificial fish reproduction, and can especially meet the requirement of arranging a net cage in a fish spawning pond.

Drawings

Fig. 1 is an overall schematic of the present utility model.

Fig. 2 is a schematic structural diagram of a preset net cage of the fish spawning pond.

FIG. 3 is a schematic view of a mesh used in the present utility model.

Reference numerals illustrate: 1-fish spawning pond, 2-net cage, 3-cylindrical net body, 3-1-net piece, 4-dense net, 5-tether and 6-sinking steel pipe.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1, a preset net cage device of a fish spawning pond comprises a fish spawning pond 1 and a net cage 2; the net cage 2 consists of a cylindrical net cage body 3, a dense net 4, a tether 5 and a sinking steel pipe 6; the bottom and the periphery of the cylindrical net cage body 3 are both made of a plurality of polyethylene meshes 3-1, and the upper part of the cylindrical net cage body is opened, so that the operation of breeding parent fish is facilitated; a close net 4 is additionally arranged at one side of the inside of the cylindrical net cage body 3, and the side is used for catching parent fish, so that damage to the parent fish in the net lifting process can be reduced; the upper edge of the cylindrical net cage body 3 is provided with a plurality of tethers 5, the tethers 5 are uniformly distributed, the upper edge of the cylindrical net cage body 3 is fixed with the fish spawning pond 1 through the tethers, and the net cage 2 is fixed in the spawning pond 1; a rod-shaped or arc-shaped sinking steel pipe 6 is paved at the bottom of the cylindrical net cage body 3 and is used for maintaining the shape of the net cage and ensuring that parent fishes can freely move in the net cage 2.

Further, the cylindrical net cage 3 has a diameter: 8-10m, height: 1.5-2.0m;

further, the dense net 4 is made of polyethylene mesh and is attached to one side of the inside of the cylindrical net cage 3.

Further, the tether 5 is a nylon or polyethylene rope.

Further, the mesh size of the mesh sheet 3-1 used for the cylindrical net cage body 3 is 5-10cm.

Further, the mesh size of the mesh sheet used for the dense mesh 4 is 5-10 mesh.

Further, the length of the tether 5 is 30-50cm.

Further, the diameter of the sinking steel pipe 6 is as follows: 2-3cm; length of rod-shaped steel tube: 7-9m, arc steel pipe length: 3-4m.

Example 1

When the fish spawning pond is used, the cylindrical net cage body is arranged in the fish spawning pond, the upper edge of the net cage is fixed with the spawning pond (annular screws can be preset) through the tether, and the sinking steel pipe is laid at the bottom of the net cage, so that the net cage is fully stretched in the spawning pond. Then, adding new water into the spawning pond, and putting the parent fish after hormone annotation; during spawning, fresh water can be continuously filled at the side or above the spawning pond, annular water flow is formed in the spawning pond, and the running water is utilized to stimulate parent fishes to spawn in oestrus; after spawning and reproduction of parent fish are completed, water inflow is reduced or stopped, and part of water in the spawning pond is discharged, so that the postnatal parent fish can be conveniently caught; in the net lifting process, the parent fish is collected to the side on which the dense net is arranged, and finally the parent fish is caught and put back into the fish pond for cultivation. In the practical process of artificial propagation, the patent of the utility model facilitates the fishing of the parent fish, reduces the damage to the parent fish, is beneficial to the postnatal recovery of the parent fish, and can improve the postnatal survival rate of the parent fish.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, which are described in the foregoing embodiments and description merely illustrate the principles of the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a predetermine box with a net device in fish spawning pond, includes fish spawning pond (1), characterized by: the device also comprises a net cage (2); the net cage (2) consists of a cylindrical net cage body (3), a dense net (4), a tether (5) and a sinking steel pipe (6); the cylindrical net cage body (3) is arranged inside the fish spawning pond, a plurality of tethers (5) are arranged at the upper end of the cylindrical net cage body (3), and the upper end of the cylindrical net cage body (3) is fixed with the fish spawning pond (1) through the plurality of tethers (5); a sinking steel pipe (6) is paved at the bottom of the cylindrical net cage body (3), so that the cylindrical net cage body (3) is fully stretched in a fish spawning pond, and the parent fish can be ensured to freely move in the net cage; the bottom and the periphery of the cylindrical net cage body (3) are both made of a plurality of net sheets (3-1), and the upper part of the cylindrical net cage body (3) is opened for facilitating the operation of breeding parent fish; the inner side of the cylindrical net cage body (3) is additionally provided with a dense net (4) for catching parent fish, so that damage to the fish body in the net lifting process is reduced.

2. A fish spawning pond preset cage device as recited in claim 1, wherein: the sinking steel pipe (6) is a rod-shaped steel pipe or an arc-shaped steel pipe; the diameter of the sinking steel pipe (6) is as follows: 2-3cm.

3. A fish spawning pond preset cage device as recited in claim 2, wherein:

the length of the rod-shaped steel pipe is as follows: 7-9m, the length of the arc-shaped steel pipe is as follows: 3-4m.

4. A fish spawning pond preset cage device as recited in claim 1, wherein: the diameter of the cylindrical net cage body (3) is as follows: 8-10m, the height is: 1.5-2.0m; the meshes (3-1) are made of polyethylene materials.

5. A fish spawning pond preset cage device as recited in claim 1, wherein: the dense net (4) is made of polyethylene material and is attached to one side of the inside of the cylindrical net box body (3).

6. A fish spawning pond preset cage device as recited in claim 1, wherein: the tether (5) is nylon or polyethylene rope.

7. A fish spawning pond preset cage device as recited in claim 1, wherein: the mesh specification of the mesh used by the cylindrical net cage body (3) is as follows: 5-10cm.

8. A fish spawning pond preset cage device as recited in claim 1, wherein: the mesh specification of the dense mesh (4) is as follows: 5-10 meshes.

9. A fish spawning pond preset cage device as recited in claim 1, wherein: the length of the tether (5) is as follows: 30-50cm.