Multi-migration row reef for larvae and juveniles of little yellow croakers

Abstract

The utility model provides a little yellow croaker larva multi-migration row reef which comprises a row reef body, the row reef body comprises a plurality of shells of hexagonal structures, reef bodies of hexagonal structures are placed in the shells, round holes are formed in the centers of the reef bodies, the central axes of the round holes coincide with the central axes of the shells, and migration channels are formed between the reef bodies and the shells. Every two adjacent shells are connected with each other, and the multiple shells are arranged to be of a honeycomb structure. Protrusions are arranged on all top corners of the shells, an installation part is arranged between every two adjacent protrusions, every two adjacent shells are connected through the corresponding installation part, each installation part comprises an installation plate, installation holes are formed in the installation plates, the installation plates of every two adjacent shells are stacked up and down, and every two adjacent shells are fixedly connected in the mode that bolts penetrate through the installation holes. The protrusions of every two adjacent shells are in contact connection, and flow guide holes are formed in the surfaces of the protrusions. The reef body is made of concrete, and a groove inclining downwards is formed in the upper surface of the reef body.

Description

Technical Field

[0001] The utility model relates to the technical field of reef conservation, in particular to reef conservation for small yellow croaker fry and young fish. Background Art

[0002] Small yellow croaker is a fish of the genus Sciaenidae of the order Perciformes, also known as cucumber, small fresh, and yellow croaker. It has an elongated, laterally flattened body; a large head with a developed mucus cavity and sagittal otoliths; a large and tilted mouth, located anteriorly; the upper and lower jaws are slightly equal, the lower jaw has no whiskers, and there are 6 inconspicuous small holes in the chin; the upper and lower jaws have fine teeth, the teeth on the outer side of the upper jaw and the inner side of the lower jaw are larger, but there are no canine teeth; the palatine bones and vomer bones are toothless; the dorsal fin is continuous; there is a notch between the fin spine and the fin ray, and the second spine of the anal fin is smaller than the eye diameter; the tail fin is pointed and long; the head and the front of the body have round scales, and the back has ctenoid scales; the fin rays of the odd fin also have fine scales; the lateral line extends to the end of the tail fin. The dorsal side is yellowish brown, the ventral side is golden yellow, the fins are grayish yellow, and the lips are orange-red. It inhabits the middle and bottom waters of the coastal and offshore sandy mud bottom at a depth of 20-100 meters. It is a omnivorous fish, mainly feeding on zooplankton, fish and shrimp, among which copepods are the main zooplankton. The spawning period is from March to June, slightly delayed from south to north. The small yellow croaker has high edible value, tender meat, rich nutrition, rich in protein, sugar, fat, calcium, phosphorus, iron, potassium, sodium, magnesium, selenium and vitamin A and other nutrients needed by the human body, and is often eaten fresh or made into salted and dried products. In addition, it also has a very high medicinal value. For example, the fish maw has the effects of moistening the lungs, strengthening the spleen, and replenishing qi and blood; the gallbladder can clear away heat and detoxify, calm the liver, and lower blood lipids; the fish scale can be used to make pharmaceutical glue; the testis is used to extract protamine and arginine; and the ovary can be used to extract lecithin. Utility Model Content

[0003] Aiming at the low artificial spawning amount of existing yellow croaker, the small spawning space and the low artificial breeding efficiency, the utility model provides small yellow croaker fry and fry to migrate to reefs to solve at least one of the above technical problems.

[0004] The technical scheme of the utility model is: a small yellow croaker fry and juvenile fish multi-migratory reef arrangement, comprising a reef arrangement main body, characterized in that the reef arrangement main body comprises a plurality of hexagonal shells, a reef body in a hexagonal structure is placed in the shell, a circular hole is provided in the center of the reef body, the central axis of the circular hole coincides with the central axis of the shell, a migratory channel is formed between the reef body and the shell, two adjacent shells are connected to each other, and a plurality of shells are arranged in a honeycomb structure;

[0005] A protrusion is provided on each vertex of the shell, a mounting piece is provided between two adjacent protrusions, and two adjacent shells are connected to each other through the mounting piece, and the mounting piece includes a mounting plate, and a mounting hole is provided on the mounting plate. The mounting plates of two adjacent shells are stacked up and down, and the two adjacent shells are fixedly connected by bolts passing through the mounting holes, and the protrusions of the two adjacent shells are in contact connection, and a guide hole is provided on the surface of the protrusion;

[0006] The reef body is made of concrete, and the upper surface of the reef body is provided with grooves inclined downward.

[0007] The utility model can provide a wider space for small yellow croaker to lay eggs by laying reefs on the seabed. The small yellow croaker can migrate multiple times in the reefs to promote its spawning. The migration channel has a certain width limit to prevent other large fish from entering and causing damage to the eggs. The circular hole in the center of the reef body and the grooves on the surface can be used as a hiding space for the small yellow croaker.

[0008] Further preferably, the shell is a shell made of metal or a shell made of transparent acrylic.

[0009] The metal shell can provide certain trace elements for the small yellow croaker, and the transparent acrylic can provide an ornamental effect on the seabed.

[0010] Further preferably, the upper surface of the reef body is provided with six grooves arranged at equal intervals, and the grooves are opened along the radial direction of the reef body.

[0011] Multiple grooves can be used to create more contact area for algae to cling to.

[0012] Further preferably, a square blind hole is provided between two adjacent grooves, and the square blind hole is opened along the axial direction of the reef body.

[0013] Adding square blind holes is used to provide more hiding space, which increases the complexity of the reef.

[0014] Further preferably, an L-shaped channel is provided between the two adjacent grooves, one end opening of the L-shaped channel is located on the upper surface of the reef body, and the other end opening of the L-shaped channel is located in the circular hole.

[0015] By increasing the L-shaped channels, the generation of seafloor eddies can be increased, thereby providing nutrients for small yellow croaker larvae and juveniles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] In the figure: 1, shell; 2, reef body; 3, round hole; 4, protrusion; 5, mounting part; 6, groove. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Reference Figure 1As shown, yellow croaker fry and young fish migrate to excavate reefs, including a reef excavation body, which includes a plurality of hexagonal shells 1, a reef body 2 with a hexagonal structure is placed in the shell, a circular hole 3 is provided in the center of the reef body, the central axis of the circular hole coincides with the central axis of the shell, a migratory channel is formed between the reef body and the shell, two adjacent shells are connected to each other, and a plurality of shells are arranged in a honeycomb structure; a protrusion 4 is provided on each vertex of the shell, a mounting member 5 is provided between two adjacent protrusions, two adjacent shells are connected to each other through the mounting member, the mounting member includes a mounting plate, a mounting hole is provided on the mounting plate, the mounting plates of two adjacent shells are stacked up and down, and the two adjacent shells are fixedly connected by bolts passing through the mounting hole, the protrusions of the two adjacent shells are in contact connection, and a diversion hole is provided on the surface of the protrusion; the reef body is a reef body made of concrete, and a groove 6 inclined downward is provided on the upper surface of the reef body.

[0020] The utility model can provide a wider space for small yellow croaker to lay eggs by laying reefs on the seabed. The small yellow croaker can migrate multiple times in the reefs to promote its spawning. The migration channel has a certain width limit to prevent other large fish from entering and causing damage to the eggs. The circular hole in the center of the reef body and the grooves on the surface can be used as a hiding space for the small yellow croaker.

[0021] Further preferably, the shell is a shell made of metal or a shell made of transparent acrylic. The metal shell can provide certain trace elements for the small yellow croaker, and the transparent acrylic can provide an ornamental effect on the seabed.

[0022] Further preferably, the upper surface of the reef body is provided with six grooves arranged at equal intervals, and the grooves are opened along the radial direction of the reef body. Multiple grooves can be used to generate more contact areas for algae to climb on.

[0023] Further preferably, a square blind hole is provided between two adjacent grooves, and the square blind hole is opened along the axial direction of the reef body. Adding the square blind hole is used to provide more hiding space, which increases the complexity of the inner part of the reef.

[0024] Preferably, an L-shaped channel is provided between two adjacent grooves, one end of the L-shaped channel is opened on the upper surface of the reef body, and the other end of the L-shaped channel is opened in the circular hole. By adding the L-shaped channel, the generation of seabed eddies can be increased, thereby providing nutrients for the fry of small yellow croaker.

[0025] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. The fry and juvenile yellow croaker mostly migrate to the reefs, including a reef-removing main body, characterized in that: The reef row body comprises a plurality of hexagonal shells, a hexagonal reef body is placed in the shell, a circular hole is provided in the center of the reef body, the central axis of the circular hole coincides with the central axis of the shell, a migratory channel is formed between the reef body and the shell, two adjacent shells are connected to each other, and the plurality of shells are arranged in a honeycomb structure; A protrusion is provided on each vertex of the shell, a mounting piece is provided between two adjacent protrusions, and two adjacent shells are connected to each other through the mounting piece, and the mounting piece includes a mounting plate, and a mounting hole is provided on the mounting plate. The mounting plates of two adjacent shells are stacked up and down, and the two adjacent shells are fixedly connected by bolts passing through the mounting holes, and the protrusions of the two adjacent shells are in contact connection, and a guide hole is provided on the surface of the protrusion; The reef body is made of concrete, and the upper surface of the reef body is provided with grooves inclined downward.

2. The method for migrating and evacuating reefs by fry and young yellow croaker according to claim 1, wherein: The shell is a shell made of metal or a shell made of transparent acrylic.

3. The method for migrating and evacuating reefs by fry and juvenile yellow croaker according to claim 1, wherein: The upper surface of the reef body is provided with six grooves arranged at equal intervals, and the grooves are opened along the radial direction of the reef body.

4. The method for migrating and evacuating reefs by fry and young yellow croaker according to claim 3, wherein: A square blind hole is arranged between two adjacent grooves, and the square blind hole is opened along the axial direction of the reef body.

5. The method for migrating and evacuating reefs by fry and juvenile yellow croaker according to claim 3, characterized in that: An L-shaped channel is arranged between two adjacent grooves, one end opening of the L-shaped channel is located on the upper surface of the reef body, and the other end opening of the L-shaped channel is located in the circular hole.

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