JPH0516939Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to a fish reef for spear squid that can form a habitat for squid as much as possible regardless of whether before or after the squid grows.

<Prior art and its problems> When we observe the conditions in which porpoise squid live in the sea, we find that they mainly hang hidden on the underside of rocky reefs that protrude laterally in the sea; It seems that there must be a place with adequate space, that is, a space at least twice the height of the squid. Moreover, if you further observe these natural squid fishing grounds, you will find that it is a relatively dark place with calm tidal currents. This seems to be the habit of the squid, but when creating a reef for the squid, it is sufficient to create a situation similar to such a natural environment. However, there are only a few fish reefs that mainly target spear squid, such as the one shown in Japanese Utility Model Application Publication No. 60-41158. A plurality of plates with the same shape are arranged vertically at regular intervals, so when this spear squid hangs from the lower surface of the upper tier, the plate of the lower tier is directly below its head. Therefore, in this situation, it does not seem to be a problem when the squid is in the so-called juvenile stage before it grows, but as the squid grows longer, the body length increases. This means that the habitat space is narrow, creating an environment that is difficult for them to live in. As for the habitat of the spear squid, as mentioned above, it prefers a place under a protruding reef and a place with moderate darkness, but the space must be of a suitable size. If you look at natural squid fishing grounds, you can see that it is not desirable to have squishy spaces. Therefore, it is understandable that what is shown in the above publication is a fantasy creation, but as a result, there is no such thing as a spear squid reef that has actually been put into practical use today. It is no exaggeration to say that it was extremely difficult.

<Means for solving the problems> In order to solve the above-mentioned problems, the squid fish reef of this invention consists of multiple tiers of plates of different widths arranged alternately at the desired intervals in the vertical direction, with a holed tubular section interposed approximately in the center, and a partition protrusion with a height that does not reach the seabed arranged on the underside of the lowest tier of plates, so that the plates create an environment similar to a natural squid reef regardless of whether the squid have grown or not.

<Embodiment> Next, an embodiment of the reef for spear squid according to this invention will be described based on the drawings. 1 is a plate body arranged in multiple stages at a desired interval in the vertical direction; In order to arrange the bodies 1 in multiple stages, they may be connected via the legs 2. Moreover, the widths of the plates 1 that are vertically adjacent to each other are different from each other.
This was done to distinguish between light and dark, taking into account that the squid prefers relatively dark places. This is because by ensuring a wide area without being blocked by the lower plate 1, it can be used regardless of whether the squid is growing or not. In other words, when the squid grows and becomes longer, it can live on the relatively lower end of the wide plate 1, and the plate 1 directly below it can occupy a wide space. This means that it will not be obstructed. Moreover, the reason why the plate body 1 is made into multiple stages is as follows. That is, the present inventor conducted an aquarium experiment using one plate, two plates, and three plates. As a result, they did not collect anything for one piece at all, but only for two and three pieces. On the other hand, the two and three pieces that came close to each other do not contribute at all to the top plate 1, and only hang particularly much to the bottom plate 1, and there is also a plate 1 above. , and even though space exists, they do not approach it. The reason for this seems to be that they prefer darkness. Depending on the above,
It is not possible to use only one plate 1, so multiple plates are arranged in multiple stages. Reference numeral 3 denotes a cylindrical portion disposed approximately in the center, and this cylindrical portion 3 is provided with a large number of holes 4. Each plate 1 is also formed with a hole 5 that communicates with the cylindrical portion, and these holes 4 and 5 are
It functions as a so-called water filter. Reference numeral 6 denotes a partition protrusion provided on the lower surface of the bottom plate 1, and in order to make the partition protrusion 6 high enough not to reach the seabed, a leg 7 is attached to the end of the partition protrusion 6. It is arranged.

<Effects of the invention> As mentioned above, according to the reef for spear squid according to this invention, a plurality of plates of different widths are arranged alternately in a plurality of stages while maintaining a desired interval in the vertical direction, and a hole is provided approximately in the center. Since the tube is interposed and a partition protrusion with a height that does not reach the seabed is placed on the bottom surface of the bottom plate, it not only creates a dark environment, but also allows the squid to be used both before and after growth. It is possible to form the space necessary for the squid to live on the lower surface of the upper plate, and since it has a cylindrical part with holes, it acts as a so-called water passage, and there is a partition protrusion on the lower surface of the bottom plate. Since the striations are formed, these will reduce the intensity of the current and create a habitat for the squid, and if artificial seaweed is placed on the top plate, the overall condition will be similar to the natural environment under the sea. It has the effect of being able to

[Brief explanation of the drawing]

The drawings show an embodiment of the reef for spear squid according to this invention; FIG. 1 is a perspective view of the reef seen from above, FIG. 2 is a perspective view of the reef seen from below, and FIG. FIG. 2 is a sectional view taken along line A-A in FIG. 1; 1...Plate body, 2...Legs, 3...Cylinder part, 4, 5
... hole, 6 ... partition ridge, 7 ... leg.

Claims (1)

[Scope of utility model registration request] A plurality of plates of different widths are alternately arranged at a desired interval in the vertical direction, and a cylindrical part with a hole is interposed approximately in the center, and the bottom surface of the bottom plate has a height that does not reach the sea bed. A reef for spear squid, characterized in that a partition protrusion having a partition ridge is provided.