JPS60192532A - Young fish floating apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] In the process of hatching eggs of salmon and other fish, which develop into larvae that start swimming on their own, conventionally at each fishery, small gravel was spread in the pond and The method used is to scatter developed eggs on top and wait for them to grow. In other words, the young fish that have developed their eyes and become silent have a habit of crawling between the gravel and quietly absorbing the nutrients from the egg yolk as they grow. The gravel also works to soften the water flowing through the pond, making the young fish less likely to exercise too much. In other words, if there is no gravel, the young fish will get lost in the current and swim.
As a result, a lot of energy is consumed for exercise, and the proportion of nutrients used for body growth decreases, resulting in poor growth of the fry.

This application is a compact silencing tank with a built-in submergence net that can be stacked instead of gravel! The purpose is to equalize the flow of fresh water in the tank, and also to make it easier to remove dead eggs, thereby saving labor.

To explain the implementation in detail, a partition plate (2) with a gap at the bottom is provided on the fresh water introduction side of the water tank (1), and a side plate (3) with a gap at the top on the discharge side. , a drain port (4) leading to this is provided, and the partition plate (2) and the side plate (3) are provided.
) on the bottom side between them (5).

A removable coarse egg-receiving net (6) is suspended in the middle, and a removable egg-receiving net (7) such as a net ring is placed on the bottom net (5).
) and cover the top of the tank with a lid (8) to create an egg-receiving net (6).
The feature is that the developed eggs are placed on top and fresh water is allowed to flow into the tank.

The fry floatation tank of this application is located in one corner of the vast breeding pond (20% of the total
Just by placing the eggs in this container and storing the hatched eggs, the young fish will eventually mature and start swimming on their own, moving to the rearing pond and spreading over the entire surface of the pond, resulting in 9 eggs. The area of the flotation tank that accommodates the adult eggs during the process of instantaneous flotation is extremely small.

That is, the developed eggs, which were separately collected and fertilized, were placed in a coarse egg-receiving net (6 holes) in the middle of the water tank (1).

Put the lid (8) on and put it in the dark, and the lower bottom net (5) is an electrical material that has a hollow shape with many surrounding gaps.

Create a space for the young fish to crawl into and huddle together by layering a large number of layers of (7) (7)... which can be used as a substitute for gravel. Eventually, the developed eggs pass through the mesh of the egg receiving net (6) and slip into the receiving net below. And the partition plate (3
) If fresh water is allowed to flow in from the bottom side, the fresh water will be dispersed over the entire surface of the bottom net through the gaps with a specified width at the bottom.
Supply fresh water to the fry that shelter in the feeding net. The egg-receiving net (6) also serves to prevent the fry in the egg-receiving net from jumping out and running away when they are startled by noises. All the developed eggs became silent. At this point, the egg catching net (6) is removed, and after removing the death penalty remaining on the lr4, the removed egg catching net (6) is fixed at the water surface position that is the upper edge of the side plate (3). ! The hatched fry will grow while consuming eggs in the net (7), and will eventually emerge, but since there is a time-varying variation in the details, the hatched fry will start swimming earlier. Since the fish float to the surface, the egg-receiving net placed on the surface of the water serves to prevent the fry from escaping. If the net to prevent the fry from entering and escaping is removed when the fry are fully surfacing, the fry will swim by themselves, overcome the side plate (3) with the running water, and be led to the rearing pond through the drainage port (4). After the fry have swam out, the aquarium is removed and stored until the next time. Due to weather conditions, etc., the aquarium should not be placed in the breeding pond from the beginning.
ground sheet.

It is also possible to use it in a pond, etc., and lead the floating am to the rearing pond through a pipe from the drainage port.

As described above, according to the present application, the area can be significantly reduced by layering the contact material instead of small gravel in conventional Goka ponds, and the hatched eggs can grow and pass through the mesh. After entering the net, the larvae left on the net can be easily removed by pulling up the net, eliminating the need to remove the larvae one by one from between the gravel in the pond, and further reducing the surfacing of the fry. Because the tank is installed inside the breeding pond,
It does not take up any extra space, and the young fish fully digest and absorb the 5 parts of the dice in the feeding material, grow, and then are sent to the rearing pond, which makes it very easy to hold one step, and there is no problem with the pond where the tank is installed. In some cases, it can have many effects, such as adding a pipe to the drain and leading it to the drainage ditch.

[Brief explanation of the drawing]

The drawing is a side view showing the embodiment of the present application. (1)...water tank (2)...partition plate (3)...
Side plate (4)...Drain port (5)...Bottom net (6)
... Egg net (7) ... aVj net (8) ...
Increase in number of applicants 1) Kiyomi

Claims (1)

[Claims] A partition plate (2) with a gap is provided at the bottom of the fresh water introduction side in the water tank (1), and a side plate (3) with a gap between the upper part of the discharge side (Kff) is installed.
) and a drain port (4) leading to this, and the partition plate (
2), a bottom net (5) is suspended between the side plates (3) on the lower side, a removable coarse egg catching net (6) is suspended in the middle, and the bottom m (5) is suspended.
A diving material (7) such as a net ring is layered on top, a lid (8) is placed on the top of the tank, and the hatched eggs are placed on the egg-receiving net (6) and fresh water is poured into the tank. A fry floating device characterized in that it is designed to allow the inflow of fish.