JP5150972B2 - Crustacean breeding method and crustaceans raised by the method - Google Patents

Description

  The present invention relates to a crustacean breeding method and a crustacean bred by the method, and more specifically, the breeding container is maintained in a favorable environmental state, and breeding management is efficient. The crustaceans are reared individually, and the shellfishes are reared individually.

  Crustaceans are an industrially important species, and many aquaculture projects have been carried out, from experimental research and learning materials to industrial ones. However, when raising crustaceans, inter-individual relationships such as cannibalism and struggle, disease infections, etc. were the main causes of lowering the survival rate of breeding. Furthermore, not only a decrease in the survival rate but also a reduction in commercial value due to damage to a part of the body was a big problem. Furthermore, in recent years, it is necessary to grasp the history of the animals to be reared, such as the practice of traceability. These problems are considered to be solved by keeping the crustaceans individually managed.

Therefore, in order to eliminate the interference between individuals for the purpose of improving the survival rate of the crustaceans to be reared, methods for rearing them individually have been developed. However, in these conventional methods, a fixed breeding container is used, and it is inefficient such as breeding management such as observation / pickup / feeding is not easy, or breeding water that has passed through other breeding containers is supplied. For example, fresh breeding water was not supplied into each breeding container, and good breeding environment conditions were not maintained such that ventilation did not reach all breeding containers evenly. Breeding management is easy, there is no patent literature on a method for keeping the inside of the breeding container in a favorable environmental state and raising crustaceans individually, and development thereof is necessary.

Furthermore, in order to raise a large number of crustaceans individually and carefully managed, there is a major problem that the space required for breeding will increase significantly, and it is also necessary to develop a compact breeding method that compresses the breeding space It has become.

  In the case of rearing crustaceans, inter-individual relationships such as cannibalism, disease infections, etc. are major causes of reducing the survival rate of breeding, and the reduction of commercial value due to body damage has also been a major problem. Furthermore, in recent years, it is necessary to grasp the history of the animals to be reared, such as the practice of traceability. These are considered to be solved by keeping the crustaceans individually managed, but with the conventional methods, the breeding management is inefficient and the good breeding environment is not maintained. It was.

In order to solve these problems, the present invention provides a crustacean breeding method in which the breeding container is maintained in a good environmental condition, breeding management is efficient, and the crustaceans are raised individually in the breeding container. It is an object to provide crustaceans raised by such a method.

  In order to solve the above-mentioned problems, the present inventor has provided the following crustacean breeding method and the crustacean raised by the method as a result of diligent efforts.

(1) Crustaceans with extremely low survival rate in group breeding, or red crayfish, a crustacean that needs individual breeding experimentally or commercially, individually in a mesh-like breeding container placed horizontally in an aquarium Therefore, it becomes possible to practice traceability by making it easier to grasp the history of red lobsters to be reared,
The breeding container is formed by a mesh through which excrement and residual food can pass,
The rearing container has an opening at the upper end,
The breeding container is provided with at least one water inlet,
Each breeding container is filled with fresh breeding water without stagnation, and the ventilation reaches evenly.
A breeding environment in which a water flow in a certain direction circulates in the water tank,
It has a cyclical breeding environment that can be used as breeding water again by purifying and purifying wastewater, and forcibly creating a water flow using the breeding water in the tank.
Observation, picking up, feeding, etc. of red tiger shrimp in the breeding container are easy,
The breeding container is detachable from the aquarium, and can be replaced with another breeding container having a different container size or mesh size.
The breeding container is disposed in the tank so as to be separated from the bottom of the tank. The excrement and residual food that have passed to the outside of the breeding container move near the bottom of the tank by a water flow in a certain direction. A method for raising red lobster, which is carried to the discharge port of the water tank and discharged to the outside of the water tank (Claim 1).

(2) The breeding water is deep ocean water (Claim 2 ).

[Invention of Claim 1]
It is possible to provide a crustacean breeding method in which the inside of the breeding container is maintained in a favorable environmental state, breeding management is efficient, and the crustacean is raised individually in the breeding container. The breeding method can be used not only for experimental research and learning materials but also for industrial aquaculture business. Furthermore, since the survival and growth of the crustaceans to be reared are improved and the rearing management is efficient, it has an excellent practicality effect that enables an efficient aquaculture business. Furthermore, since the breeding is carried out by individual, it is easy to grasp the history of the crustaceans to be raised, and it is possible to practice traceability.

  Since there is a breeding environment in which a water flow in a certain direction circulates in the water tank, the breeding container is maintained in a better environmental state.

  Since the wastewater is purified and purified, it can be used again as breeding water, and it has a cyclic breeding environment in which the breeding water can be forcibly created using the breeding water in the tank. The breeding water can be used efficiently and labor-saving.

This breeding method is particularly preferably used in the case of crustaceans that have a remarkably low survival rate in group breeding or red crustaceans that are crustaceans that require individual breeding experimentally or commercially.

[Invention of claim 2 ]
A particularly preferable breeding environment can be obtained by using deep sea water as breeding water.

  The crustaceans in the present invention include all crustaceans in the world that are targeted for aquaculture, breeding experiments, and learning materials.

That is, the crustaceans in the present invention include, for example, king crab, giant crawfish, king crab, king crab, crayfish, crayfish, crayfish, crayfish, crayfish, crayfish, crayfish, crayfish, crab, , Juniper thistle, crabs, crab crab, Chinese crab crab, blue club, dungeness crab, european care crab, crocodile crab, rock club, red club, tasmania blue crab, snow crab, red snow crab, red shrimp, tiger shrimp, tiger shrimp, tiger shrimp, lobster prawn Shrimp, shrimp, shrimp, red shrimp, horned shrimp, bearded shrimp, ginkgo shrimp, button shrimp, shrimp, shrimp Geakaebi include Pandalus borealis, Hokkaiebi, lobster, Uchiwaebi, scyllarides squammosus, lobster, shrimp, Shiraebi, Koshioriebi, garage, prawn, edible crustaceans such Sujiebi.

The crustaceans in the present invention are not only edible, but also used for breeding, appreciation, and learning materials such as giant shrimp, shrimp shrimp, red shrimp, tiger shrimp, shrimp, shrimp, teppoebi, crayfish, hermit crab, coconut crab, crabs, crabs, lobsters, etc. And other crustaceans.

In the crustacean breeding method according to the present invention, the crustaceans are individually accommodated in a mesh-like breeding container disposed in a water tank, and fresh breeding water is poured into the breeding container without stagnation and aeration. It is easy to maintain, such as observation, picking up, feeding, etc. of the crustaceans in the breeding container, the breeding container is detachable from the aquarium, and the container size or mesh size is different. The rearing container is disposed in the water tank in a state of being separated upward from the bottom surface of the water tank, and the excrement passing through the outside of the rearing container and the residual food are in a certain direction. The water flows near the bottom of the aquarium and is transported to the aquarium outlet to be discharged outside the aquarium.

It is preferable that the inside of the water tank in which the breeding container is accommodated is a breeding environment in which a water flow in a certain direction circulates. However, it creates an efficient water flow in a certain direction, efficiently transports excrement and residual food that have passed to the outside of the breeding vessel to the outlet of the aquarium, and discharges them to the outside of the aquarium. This is because it can be held.

It is preferable that it is a cyclic breeding environment that can be used as breeding water again by purifying and purifying the waste water and forcibly creating a water flow using the breeding water in the aquarium. However, the waste water is purified and purified using a purification device such as filtration means, and this is used again as breeding water, and forced by a circulation pump using the breeding water in the tank to secure the water flow in the tank. This is because the breeding water can be used efficiently and labor-saving by creating a stream of water.

Further, the present invention allows a plurality of drawer-like breeding containers to be detachably held in the holding body, the breeding containers are arranged vertically or horizontally in the holding body, and crustaceans are placed in each breeding container. A crustacean breeding method is provided, characterized in that each crustacean is housed individually, and each crustacean is individually raised in a well-managed state.

In particular, it is possible to compress the breeding space by arranging the breeding containers in the vertical direction and to perform breeding with careful management. Even in a limited area, it is possible to increase the breeding capacity by stacking the breeding containers in the vertical direction.

  It is preferable that the breeding environment is such that the breeding water is poured into the breeding container and the breeding water in the breeding container is drained out of the breeding container. This is because the breeding container can be maintained in a favorable environmental condition.

The breeding method according to the present invention exhibits a remarkable effect particularly when the crustacean is of a kind that has a significantly low survival rate in group breeding or a kind that requires individual breeding experimentally or commercially. If the crustaceans to be bred are crustaceans that have significant inter-individual relations such as cannibalism and struggle, such as crayfish, crabs, lobsters, lobsters, red lobsters, and prawns, This is because a remarkable effect is exhibited in the control of the improvement of the remaining rate and the reduction of the commercial value.

The breeding method according to the present invention exhibits a particularly remarkable effect when the crustacean to be bred is the red-billed shrimp Metanephrops japonicus. However, this species has hatched as pre-zoa and almost molts into megalopa (post-rava) within 3 hours without feeding. Megalopa molts into 1st-year-old juvenile shrimp. Therefore, compared to red lobsters, lobsters, etc. that have zoea larvae, there is no zoea larvae in its growth stage, and breeding and aquaculture are possible from the developed growth stage, so a high survival rate is ensured Because.

By the way, red-shrimp metanephrops
japonicus is a high-grade edible species that inhabits the sand and mud floors at a depth of 200-400m from Choshi to Minami Hinata Pass and grows to a length of 20cm.

Use the crustacean breeding method according to claims 1 to 3 when the crustacean is in an early age, and use the crustacean breeding method according to claims 4 and 5 when the crustacean is in an adult period. It is preferable. However, in a young age, which is a small and weak stage, a high survival rate is secured and a remarkable effect can be exhibited by maintaining the inside of the breeding container in a favorable environmental state. Furthermore, in the adult period in which a large space occupies a large space, the overall breeding space can be compressed by breeding three-dimensionally, and a remarkable effect is exhibited. That is, more efficient breeding management can be practiced.

The breeding water is preferably deep ocean water. Compared with surface water, deep ocean water is 'cleanliness' such as few pathogenic bacteria, bacterial counts and harmful pollutants, 'low water temperature' is low throughout the year, water quality fluctuation is small, physical / chemical and It has water quality characteristics such as 'water quality stability' which is microbiologically stable and 'high nutrition' rich in inorganic nutrient salts such as nitrates, phosphates and silicates. This is because by utilizing deep ocean water having these characteristics, the survival rate of crustaceans is improved, and further, safety as food is ensured, and a remarkable effect is exhibited.

The deep ocean water is seawater having a depth of 100 m or more, and is preferably pumped from a depth of 300 to 700 m in Suruga Bay.

Crustaceans bred by the above methods have a wide range of uses as released seedlings necessary for resource recovery and expansion, as seedlings or food materials for aquaculture and farming, or as learning materials, exhibition viewing etc. .

Next, the breeding container and the like shown in FIGS. 1 to 7 used in the present invention will be described.

What is shown by the code | symbol 1 is a water tank.

  In the aquarium 1, mesh-like breeding containers 5, 5... For individually accommodating crustaceans 3 are detachably disposed in a state of being separated upward from the bottom surface 7 of the aquarium 1. The crustaceans 3 are housed in the breeding containers 5 individually (each separately), that is, one for each breeding container 5.

  Each breeding container 5 is formed of a mesh 9 through which breeding water, gas (air, oxygen), excrement, residual food, and the like can pass.

  Each breeding container 5 is horizontally placed on the gantry 11 so as to be removable while being separated from the bottom surface 7 of the water tank 1.

  Each breeding container 5 has an opening 13 at the upper end.

  A breeding water supply means 17 for supplying fresh breeding water 15 to each breeding container 5 is provided.

  The breeding water supply means 17 supplies fresh breeding water 15 that has not passed through the other breeding container 5 into the breeding container 5.

  That is, the breeding water supply means 17 includes at least one water inlet 19 for each breeding container 5. From each water inlet 19, fresh breeding water 15 is poured into the breeding container 5 without stagnation. What is indicated by reference numeral 20 is a breeding water supply pipe for supplying breeding water 15 to each water inlet 19.

  A bubble supply means 23 for supplying the bubbles 21 to each breeding container 5 is provided.

  As an example, the bubble supply means 23 preferably sends gas (air, oxygen) to the bubble disperser 27 below each breeding container 5 through the vent pipe 25, and the gas disperser 27 is provided with a large number of the bubbles. The through holes 29, 29... Are more preferably sent as fine bubbles 21, 21,... Into each breeding container 5.

  Further, the excrement and the remaining food that have come out of each breeding container 5 are discharged to the outside of the water tank 1 by a water flow 31 flowing in a fixed direction at the bottom of the water tank 1.

  That is, in order to prevent the excrement and residual food that have come out of the breeding container 5 from staying in the vicinity of the breeding container 5 or at the bottom of the tank 1, the breeding environment is not deteriorated. The breeding water supply pipe 20 is provided with a water inlet 33 for creating the water flow 31, and the excrement and the residual food are moved near the bottom surface 7 of the aquarium 1 by the water flow 31 in the fixed direction, and are moved to the bottom surface 7 in the water tank 1. It is carried to the discharge port 35 that faces, and discharged from the discharge port 35 to the outside of the water tank 1.

  The breeding water 15 is preferably deep sea water.

  The water flow 31 circulates in the water tank 1.

  That is, as an example, by making the aquarium 1 into a circulating aquarium as shown in FIG. 6, a water flow in a certain direction is efficiently created, and excreta and residual food are efficiently discharged from the outlet 35 of the aquarium 1 to the outside of the aquarium 1. Let

  The light quantity or light quality of each breeding container 5 can be adjusted.

  That is, as an example, an openable / closable lid 37 is attached to the aquarium 1, and the inside of each breeding container 5 is darkened by closing the lid 37, and each breeding container 5 is opened under natural light by opening the lid 37. It is possible to make a state.

  Further, light sources 39, 39... Such as fluorescent lamps and light emitting diodes are attached to the inner surface of the lid 37, and the light quantity and light quality can be adjusted by the light sources 39, 39.

  A means for adjusting the water temperature of the breeding water 15 is provided.

  That is, as an example, the breeding water supply means 17 is provided with a water temperature regulator 41, and the water temperature regulator 41 regulates the water temperature of the breeding water 15.

  Further, even when the water temperature controller 43 in the water tank such as a heater or a cooler is disposed in the water tank 1 and the breeding water 15 whose water temperature has been adjusted is not temporarily poured, the water temperature controller 43 in the water tank 1 You may make it adjust the water temperature of. See FIG.

  The drainage of the breeding apparatus is purified and purified by the purification means 45 such as a filtering means, and is used again as the breeding water 15. See FIG.

  As an example, the water tank 1 is a circulating water tank capable of forcibly creating a water flow using the breeding water 15 in the water tank 1.

  That is, in order to secure the water flow 31 in the water tank 1, a circulating water tank that can forcibly create a water flow by the circulation pump 47 using the breeding water 15 in the water tank 1 is used. See FIG.

  Next, the breeding container and the like shown in FIGS. 8 to 15 will be described.

  A plurality of drawer-like breeding containers 53 are held in the holder 51 so as to be detachable.

  The holding body 51 is provided with an open storage chamber 54. The breeding container 53 preferably opens at the upper end 53a. However, the upper end 53a of the breeding container 53 and the like may be provided with an open / close lid (not shown). The breeding container 53 is removably held in the storage chamber 54.

The plurality of storage chambers 54 in the holding body 51 are arranged in the vertical direction or the horizontal direction.

The plurality of storage chambers 54 in the holding body 51 are preferably arranged in the vertical direction. By holding the breeding container 53 in the storage chamber 54 arranged vertically, the breeding space can be compressed and the breeding can be managed carefully. That is, it is possible to increase the breeding capacity even in a limited area.

The breeding container 53 is preferably detachable in the horizontal direction with respect to the storage chamber 54, but may be detachable in a direction inclined with respect to the storage chamber 54.

The holding body 51 and the breeding container 53 are formed of a material that is lightweight and strong and has excellent water resistance, such as polycarbonate, polystyrene, polyvinyl chloride, polyethylene, polypropylene, and the like.

In order to maintain the inside of the breeding container 53 in a favorable environmental condition, water injection means 56 for injecting (55) the breeding water into the breeding container 53, and the breeding water in the breeding container 53 are drained out of the breeding container 53 ( 57) A draining means 58 is provided.

That is, the breeding water is poured (55) into the breeding container 53 through the filling pipe 59 of the water filling means 56, and the breeding water in the breeding container 53 is moved (61) to the drain outlet 60 of the draining means 58. 53 is drained (57).

In order to clean the breeding environment, the water injection means 56 for individually pouring the breeding water into each breeding container 53 and the drainage means for draining the breeding water in each breeding container 53 to the outside of the breeding container 53 individually. 58.

That is, the breeding water is individually poured into each breeding container 53 through the filling pipe 59 of the water filling means 56 (55), and the breeding water in the breeding container 53 is moved to the drain port 60 of the draining means 58 (61). The water is drained (57) separately from the breeding container 53.

In order to increase the efficiency of the amount of breeding water used, water feeding means 56 or draining means 58 for pouring or draining the breeding water in one breeding container 53 into the other breeding container 53 is provided.

That is, the breeding water that has passed through one breeding container 53 is poured (62) into the other breeding container 53 by the water filling means 56, or the breeding water in one breeding container 53 is drained from the outlet 60 of the drainage means 58. (61) and drained (63) into another breeding container. See FIG.

  In order to maintain the inside of the breeding container 53 in a favorable environmental state, a ventilation means 64 for ventilating the inside of the breeding container 53 is provided.

  For example, the ventilation means 64 is configured to diffuse the gas 66 (air or oxygen) fed through the ventilation pipe 65 into the breeding containers 53 as bubbles 68 by the bubble disperser 67. See FIG. 11, FIG. 12, and FIG.

  As breeding water, surface seawater 69, deep ocean water 70 or fresh water 71 can be used. Preferably, breeding water temperature adjusting means 72 is provided. See FIG. 13 and FIG.

  The surface seawater 69 is seawater with a depth of 100 m or less. The deep ocean water 70 is seawater having a depth of 100 m or more.

  It is possible to set various kinds of breeding conditions by pouring the breeding water of the surface seawater 69, the deep sea water 70 or the fresh water 71 whose water temperature is adjusted by the water temperature adjusting means 72 into each breeding container 53 through the water injection pipe 73. It is possible to breed a variety of crustaceans 3.

  Examples of the present invention will be described below, but the present invention is not limited to these examples.

[Environmentally improved breeding experiment]
<Materials and methods>
A 100-day-old 100-day-old red shrimp from hatching that was raised under artificial rearing was used for the experiment. Their craniothoracic length was approximately 7-8 mm. As the breeding conditions, two experimental plots, a control breeding plot and an environment improving breeding plot (FIG. 1), were set. Red tiger shrimps were individually housed in each breeding container, and were used for breeding water using deep ocean waters until 200 days (300 days of age). In both experimental groups, the water temperature was adjusted to about 15 ° C., and a sufficient amount of frozen shrimp and cherry shrimp were given every two days. As a control breeding area, place a mesh-like breeding container of about 2 liters that can pass excrement, residual food, etc. in the tank of 1.5-ton tank, and pour water from one place in the tank. Twenty-four individuals were bred. As environment-raising breeding areas, place the breeding containers on the pedestal so that they are not in contact with the bottom of the aquarium, inject water from each location in each breeding container, and evenly aerate each breeding container. 79 individuals were bred while allowing them to reach. Furthermore, a water flow in a certain direction was created in the aquarium, and excrement and residual food moved near the bottom of the aquarium and discharged from the outlet to the outside of the aquarium.

<Result>
Survival rates of red tiger shrimp in the control breeding area and the environment-enhanced breeding area were 54.2% and 94.9%, respectively, 100 days after the start of the experiment, and 12.5%, 81.0%, respectively, 200 days after the start of the breeding At 300 days after the start of breeding, the percentages were 4.2% and 68.4%, respectively, and a significant difference (χ
² tests, p <0.00 1) were observed, and the survival rate of the environment-enhanced breeding area was high. The craniothoracic length 300 days after the start of the breeding was approximately 17 to 20 mm.

From the above results, environment-raising breeding has an improved survival rate and is efficient for crustacean breeding.

[Draw-out breeding experiment]
<Materials and methods>
Forty-seven red tiger shrimps caught in Suruga Bay were tested. Their craniothoracic length was approximately 4-6 cm. As the breeding conditions, two experimental plots, a control breeding plot and a drawer-type breeding plot (a breeding plot using a drawer-shaped breeding container as shown in FIG. 8), were set. Red tiger shrimps were individually housed in each breeding container, and were used for breeding water using deep sea water and were bred until 300 days from the start of the experiment. The water temperature was adjusted to about 7 ° C., and a sufficient amount of frozen cherry shrimp was given every two days as food. As a control breeding area, a water-permeable approximately 18 liter breeding container was installed in a 5-ton water tank in a plane, and 23 individuals were bred while pouring water from one place in the water tank. This time, the area is 0.267m
² A container having a volume of 0.083 m ³ was used by dividing it into 4 spaces so that one section was about 18 liters. As drawer-type breeding ward, drawer-like breeding container is arranged in three dimensions (vertical direction), water is poured from one place in each breeding container, water is changed by draining from one place, and each breeding Twenty-four individuals were bred while aeration with containers. This time, about 8 4 liter capacity rearing containers (
Two rows and four stages) fit in a case having an area of 0.14 m ² and a volume of 0.05 1 m ³ were used.

<Result>
The survival rate of red tiger shrimp in the control breeding plot and the withdrawal breeding plot was 95.7% and 83.3% after 100 days from the start of the experiment, respectively, and 8 each after 200 days from the start of the breeding.
2.6%, 79.2%, and 56.5% and 66.7% after 300 days from the start of the breeding, respectively, and there is a significant difference between the control breeding area and the withdrawal type breeding area (χ ² test, p > 0.05) was not observed.

Necessary area per animal required for breeding when installed in the facility is 0.067 m ^{2 in} the control breeding area and 0.018 m in the withdrawal breeding breeding area.
^{2. With} the pull-out breeding, the breeding space could be reduced to 27%. The pull-out breeding was adopted for 4 cases in 1 case this time. However, if 3 cases are arranged three-dimensionally (vertical direction) to 12 stages, the breeding space does not change and the capacity is further tripled. The breeding space can be reduced to 9%.

From the above results, the drawer-type breeding area was able to greatly reduce the breeding space while maintaining the conventional survival rate, and was therefore efficient for raising crustaceans.

It is sectional drawing which shows the breeding container for accommodating crustaceans separately. It is a perspective view which shows a breeding container same as the above. It is sectional drawing which shows an example of the breeding apparatus. It is a perspective view which shows a breeding apparatus same as the above. It is a perspective view which shows another example of a breeding apparatus same as the above. It is a perspective view which shows another example of a breeding apparatus same as the above. It is a perspective view which shows an example of a bubble disperser. It is sectional drawing which shows an example of the breeding container hold | maintained in the holding body. It is a perspective view which shows an example of a breeding container. It is a perspective view which shows another example of the breeding container hold | maintained in the holding body. It is a perspective view which shows another example of a breeding container. It is sectional drawing which shows a water injection means, a drainage means, and a ventilation means schematically. It is a perspective view which shows another example of the breeding container hold | maintained in the holding body. It is a perspective view which shows a water injection means, a drainage means, and a ventilation means schematically. It is a perspective view which shows another example of the breeding container hold | maintained in the holding body.

DESCRIPTION OF SYMBOLS 1 Aquarium 3 Crustacea 5 Breeding container 7 Bottom face 9 Mesh 11 Mount 13 Opening part 15 Breeding water 17 Breeding water supply means 19 Pouring port 20 Breeding water supply pipe 21 Bubble 23 Bubble supply means 25 Vent pipe 27 Bubble distributor 29 Through hole 31 Water flow 33 Water injection port 35 Drainage port 37 Lid 39 Light source 41 Water temperature adjustment device 43 Water temperature adjustment device 45 Aquarium water temperature adjustment device 45 Purification means 47 Circulation pump 51 Holding body 53 Breeding container 53a Upper end 54 Storage chamber 55 Water injection 56 Water injection means 77 Drainage 58 Drainage means 59 Note Water pipe 60 Drain port 61 Movement 62 Water injection 63 Water drainage 64 Aeration means 65 Ventilation pipe 66 Gas 67 Bubble disperser 68 Air bubbles 69 Surface seawater 70 Deep sea water 71 Fresh water 72 Water temperature adjustment means 73 Water injection pipe

Claims (2)

In group breeding, crustaceans with extremely low survival rates, or red shrimp, which are crustaceans that require individual breeding experimentally or commercially, are individually housed in mesh-like breeding containers placed horizontally in an aquarium. Therefore, it is possible to easily trace the history of red tiger shrimp to be reared and to implement traceability,
The breeding container is formed by a mesh through which excrement and residual food can pass,
The rearing container has an opening at the upper end,
The breeding container is provided with at least one water inlet,
Each breeding container is filled with fresh breeding water without stagnation, and the ventilation reaches evenly.
A breeding environment in which a water flow in a certain direction circulates in the water tank,
It has a cyclical breeding environment that can be used as breeding water again by purifying and purifying wastewater, and forcibly creating a water flow using the breeding water in the tank.
Observation, picking up, feeding, etc. of red tiger shrimp in the breeding container are easy,
The breeding container is detachable from the aquarium, and can be replaced with another breeding container having a different container size or mesh size.
The breeding container is disposed in the tank so as to be separated from the bottom of the tank. The excrement and residual food that have passed to the outside of the breeding container move near the bottom of the tank by a water flow in a certain direction. A method of raising red lobster, which is transported to the discharge port of the aquarium and discharged to the outside of the aquarium. Metanephrops japonicus breeding method according to claim 1, wherein the breeding water is deep sea water.

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