JPH07308140A - Method of making attitude of fishes uniform in their direction and apparatus therefor - Google Patents

Abstract

PURPOSE:To provide an apparatus for catching a fish in the preserving area unmanually without injuring its body by allowing fishes to face one (upstream) direction in the same posture utilizing their habit or behavior that they tend to swim against the water flow. CONSTITUTION:This apparatus 1 comprises a water tank 2 as a preserving area, a water conduit 3 connected to the tank 2 and a water feeder 4 for making a water flow on the upstream side of the conduit 3 and the target fishes are thereby allowed to face the upstream direction in the same posture. It is preferred that fishes are allowed to face one direction in one posture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when feeding live fish to a live-breeding device in the same direction and posture while keeping it alive, sets the dorsal and ventral sides of the live fish up and down in water, and the head is located upstream. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for aligning the direction and posture of live fish for aligning them so that they face each other.

Except for some benthic and planktonic fish,
It is generally said that fish swimming in the water everyday have a tendency to swim against the flow of water, if any. Examples include salmon, so-called migratory fish such as sea bream, yellowtail, and sea bass, and fish that live in freshwater ponds and streams such as trout, carp, and char. Live fish is a general term for live fish, but in the present application, it refers to these types of live fish that are swimming daily.

[0003]

2. Description of the Related Art Conventionally, for example, when feeding live fish to a live-breathing device such as a foot-operated live fish, catch the fish one by one because they are alive and arrange the direction and posture of the live fish by hand. The live fish live bullying device is thrown in, or the fish is put into an asphyxia state with carbon dioxide gas and thrown into the live fish live bullying device in the same direction and posture.

[0004]

However, the above-mentioned manual work requires skill to catch live fish without scratching, and live fish is generally hard to work because it is exposed. Low. In addition, the one using carbon dioxide gas has the problem that the number of working steps is increased, which requires a device and causes a cost increase, and the quality is not as good as that obtained by immediately killing untreated live fish without treatment. It was

In view of this, the present invention provides a method and apparatus for aligning the direction and posture of live fish, which makes it possible to make the direction and posture of live fish constant without the need for manpower by utilizing the property of fish to flow. It was made for the purpose of providing.

[0006]

In order to solve the above-mentioned problems of the prior art, the present invention utilizes the property of live fish to swim against a stream of water so that the live fish can swim against the stream of water so that the direction and posture of the live fish are aligned. The method for aligning the direction and attitude of live fish according to claim 1, wherein the water flow is a water flow flowing in a fixed direction in the water channel portion. 2. The method for aligning the direction and posture of a live fish according to claim 2, wherein the water channel portion is not so wide in its width as the width of the live fish, and is longer in length than the body length of the live fish. The method for aligning the direction and posture of live fish according to claim 3, wherein there is a live fish storage region in the downstream region of the water flow of the water channel part and a live fish treatment region in the upstream region of the water flow of the water channel part. Department of live fish processing The width and depth of the live fish are such that the live fish can finally pass through at a position close to the fish. The method for aligning the direction and posture of the live fish according to claim 4, wherein the live fish storage area is a waterway. The method for aligning the direction and posture of a live fish according to claim 5, wherein the water tank portion is provided so as to be connected to the water portion, and a water flow forming means is provided on the upstream side of the water channel portion. The method for aligning the direction and posture of live fish according to claim 6, further comprising: a live fish storage area for storing live fish; a water channel portion connected to the live fish storage area; and this water channel portion. An apparatus for aligning a direction and a posture of a live fish according to claim 8, further comprising a water flow forming means on the upstream side of the water flow.

[0007]

In the above-described device for aligning the direction and posture of live fish,
Water is constantly supplied from the water flow forming means provided on the upstream side of the water channel to the live fish storage area via the water channel, and a flow is generated in the water channel. Then, the live fish in the live fish storage region moves toward the waterway portion with the back and belly in the vertical direction and the head toward the upstream side, and moves to the next process on the upstream side of the waterway portion via the waterway portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a live fish direction and posture aligning device (hereinafter referred to as aligning device) used in the live fish direction and posture aligning method of the present invention will be described below with reference to FIGS. 1 and 2.

The aligning device 1 includes a water tank portion 2 as a live fish storage area, a water channel portion 3, and a water supply portion 4 as a water flow forming means.
And have.

The water tank 2 is made of stainless steel or plastic and has a box-like shape with an open top. One side of the water tank 2 has a trapezoidal plan shape as shown in FIG. Has been formed. Then, at the bottom of the water tank portion 2, a bottom plate 6 that gently inclines downward toward the water channel portion 3 is formed.
The bottom plate 6 is provided with a drainage port 7 in which a net is stretched. A drain pipe 8 is provided below the drain port 7.

The water channel portion 3 is made of a stainless material or a plastic material and has a U-shaped cross section with an open upper portion. One of the water channel portions 3 is connected to the throttle portion 5 of the water tank portion 2 and the other is, for example, live fish treatment. Live fish as a region is connected to a live fish live-mealing device 9 as a region. Then, on the upstream side of the water channel portion 3, as shown in FIG.
A net 10 that inclines upward toward the exit is stretched.

In a waterway with a water flow, live fish swim in an upstream direction against the water flow. The speed of the water flow at that time depends on the type of fish, but if it is too fast or too slow, the fish will turn over and the alignment efficiency will deteriorate. Further, in order to prevent the live fish from being inverted, the width of the water channel portion 3 is not so much wider than that of the live fish, and its length is at least longer than the body length of the live fish. Even when the inlet of the waterway section 3 is wide, the width of the waterway section 3 is gradually narrowed toward the upstream direction of the water flow,
It is preferable that the portion where the width of the water channel portion 3 is not much larger than the width of the live fish is at least about the body length of the live fish. In order to facilitate the treatment of live fish performed by the live fish live bullying device 9, the water channel part 3 is provided at a position close to the live fish live bullying device 9 so that one live fish is supplied to the live fish live bullying device 9 as much as possible. It is desirable that the width and depth of the fish be such that at least one fish can pass through.

The water supply unit 4 includes a pump 11 and a motor 12.
And a water supply pipe 13. And the water supply pipe 13
Is horizontally inserted below the net 10 of the water channel portion 3, and a water supply pipe 13 is provided with a pump 11, which is driven by a motor 12.

Since the aligning device 1 is constructed as described above, when the motor 12 is started, the pump 11 is rotated and water is supplied from the water supply pipe 13 to the water channel part 3 as shown by an arrow A.
It is stored in the water tank portion 2 via the water passage portion 3. When live fish is put in the aquarium part 2, the live fish has a property of moving toward the flow. Therefore, the live fish moves to the water channel part 3 as shown by an arrow B, and the back and belly are vertically moved, and the head is moved to the water channel part 3. The waterway part 3 is moved toward the upstream side, and then moved to the live fish live-meating device 9 in the next step. Therefore, the directions and postures of the live fish can be the same.

FIG. 3 shows an aligning device 1 applied when a plurality of live fish live-meating devices 9 (two in this embodiment) are provided, and two straightening plates 14 parallel to each other are provided inside a side plate 15. Two water channel portions 3 are formed with the provided side plate 15, and the water tank portion 2 is formed inside the two flow regulating plates 14. Then, by supplying water from the water supply unit 4 from the upstream side of each water channel unit 3, the live fish in the aquarium unit 2 moves to the live fish live bullying device 9 via each water channel unit 3.

In this embodiment, the aligning device 1 is used as the live fish live-meating device 9, but it may be used in other devices that need to be supplied with live fish, and water is used as live fish. Depending on the type, it may be seawater or fresh water and is not limited to these. Further, the width of the water channel can be made variable so that one live fish or a plurality of live fish can pass through at the same time.

The downstream area of the water flow in the water channel section 3 is connected to the water tank section 2, and the live fish stored therein is guided by the water flow flowing from the water channel section to enter the water channel section. The aquarium 2 may be, for example, a cage in which farmed fish is stored, or a aquarium. In addition, a live fish live bullying device 9 is provided in an upstream region of the water flow in the water channel 3. The live fish live bullying device 9 may be a live fish live bullying device or a live fish live bullying device for injecting a vaccine into cultured fish lined up one by one in the waterway 3.

In addition to supplying water with the pump 11, the water supply unit 4 can also use a method of circulating the water flow such as water channel → water tank → water channel with air or the like, even if water is poured at a head.

[0019]

As described above, the method for aligning the direction and posture of live fish according to the present invention utilizes the property of live fish to swim against a stream of water so that the live fish swims against the stream of water to align the direction and posture of the live fish. Therefore, the direction and posture of the live fish can be easily aligned without requiring human labor. Since the width of the water channel is not so wide as that of the live fish, it is possible to prevent the live fish from being inverted. Moreover, since the width and depth of the water channel portion are such that only one live fish can pass through, the fish can be reliably supplied to the live fish treatment area one by one.

Further, according to the live fish direction and posture aligning apparatus of the present invention, a live fish storage area for storing live fish, a water channel portion connected to the live fish storage area, and an upstream side of the water flow of the water channel portion. Since the water flow forming means is provided, it is possible to send the live fish to the next step in a constant direction and posture in a natural state without scratching the live fish. And, since these can be surely performed by a simple device that only supplies water to create a flow, it has an excellent effect that it is inexpensive and the working efficiency is greatly improved.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a live fish direction and posture aligning device of the present invention.

FIG. 2 is a vertical cross-sectional view of FIG.

FIG. 3 is a plan view showing another embodiment of the device for aligning the orientation and posture of live fish.

[Explanation of symbols] 1 aligning device 2 water tank part 3 water channel part 4 water supply part 11 pump 12 motor 14 straightening plate

Claims (8)

[Claims] 1. A method of aligning the direction and posture of a live fish, characterized in that the direction and posture of the live fish are aligned by allowing the live fish to swim against the stream of water by utilizing the property that the live fish swim against the stream of water. 2. The method for aligning the direction and posture of a live fish according to claim 1, wherein the water flow is a water flow that flows in a fixed direction in the water channel portion. 3. The method for aligning the direction and posture of a live fish according to claim 2, wherein the water channel portion is not so wide in width as that of the live fish and is longer in length than the body length of the live fish. 4. The method for aligning the direction and attitude of live fish according to claim 3, wherein a live fish storage region is provided in a downstream region of the water flow in the water channel part, and a live fish treatment region is provided in an upstream region of the water flow in the water channel part. 5. The direction and posture alignment of the live fish according to claim 4, wherein the water channel portion has a width and a depth such that at the position close to the live fish treatment area, the live fish can finally pass through. Method. 6. The method for aligning the direction and posture of live fish according to claim 5, wherein the live fish storage area is a water tank portion provided in connection with the water channel portion. 7. The method for aligning the direction and posture of a live fish according to claim 6, wherein a water flow forming means is provided on the upstream side of the water channel portion. 8. A live fish storing area for storing live fish, a water channel portion connected to the live fish storage area, and a water flow forming means on the upstream side of the water flow of the water channel portion. Direction and posture alignment device.