JP2001078617A - Fishing pond, and maintenance and management of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fishing pond which prevents fish from becoming weak or dying as a result of changed water temperature or shaking of a raft, net or the like by providing a pool holding water for fish, filter for recirculating water, installed on the water recirculating passage, and means for throwing a mixture of bacteria. SOLUTION: This fishing pond is installed on the ground, and is obtained by providing a pool 1 which holds water for fish, filter 20 for recirculating water, installed on the water recirculating passage through which water taken out of the pool 1 is returned back to the pool 1, and means for throwing a mixture of bacteria, preferably Bacillus Spp., Nitrosomonas, Nitrobacter and Pseudomonas, which hydrolyze given substances and discharge hydrolase.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing pond installed on land and a method for maintaining the same.

[0002]

2. Description of the Related Art Conventionally, a saltwater fish basin that has existed in the past is constructed by setting a raft on the sea, suspending a fish net on the raft, allowing fish to swim in the raft, and allowing fishermen to catch fish from the raft or from the shore. Very simple things like this were common.

[0003]

However, the conventional marine fishing pond described above has many problems as described below. In the natural sea, the water temperature fluctuates greatly depending on the season, and the water temperature cannot be controlled. As a result, for example, in winter when the water temperature decreases, the warm-flowing fish becomes inactive and loses its bite or sometimes dies. Because a fishing net is formed at the bottom of the fishing pond, fish such as flounder that inhabits the seabed become unstable and their biting becomes worse. The fish become unstable due to the shaking of the raft or fish net, the sound of the raft hitting, etc., and the biting becomes worse. Leftover food and excrement of fish thrown into the fishing pond are directly washed away into the sea, causing seawater pollution. In particular, since the bottom of the fishing basin is a fishnet, most of the bait put in flows into the sea without being eaten by the fish in the fishing basin, and not only is the seawater polluted, but also the waste of the bait is large. Vulnerable to sudden rain and wind. In particular, when fishing on a raft, the danger is particularly large and is not suitable for women and children.

[0004] In a conventional fishing pond, even in the morning and evening when there is a strong appetite for fish, anyone can catch a certain amount of fish regardless of their arms, but in other cases, for example, during the daytime, the appetite of the fish is low. There was also a problem that it was so low that ordinary customers could not catch much. The present invention has been made in view of the above circumstances, and an object of the present invention is to solve the problems of the conventional marine fishing pond described above in (1) at once, and to change the time zone. It is an object of the present invention to provide a fishing pond in which the bite of the fish is improved and the fishing result is increased on average, and a method of maintaining the fishing pond.

[0005]

Means for Solving the Problems In order to achieve the above object, a first invention is provided on a shore, a pool in which water is supplied and a fish inhabits the inside, a water is taken out from the pool, and the water is taken out again. A filter device that is provided on a circulation path returning to the pool and filters the water, and a plurality of cells that decompose a predetermined substance and discharge a decomposing enzyme are provided in at least one of the filter device and the pool. And a mixed cell input means for inputting the mixed mixed cells. Here, it is preferable that a predetermined degrading enzyme is further added together with the mixed cells. As a result, it is possible to efficiently purify the water in the pool with the mixed bacterial cells and the decomposing enzyme, and maintain an environment suitable for fish habitat, even though the fishing hole is a closed fishing pond installed on land. In addition, the degrading enzyme that is excreted or added from the above cells is taken into the body of the fish in the pool to promote digestion and increase the appetite of the fish. In addition, the appetite of fish can be controlled by the input frequency and the frequency of feeding, so that it is possible to improve the bite of the fish regardless of the time zone and improve the average catch. The mixed cells are, for example, at least Bacillus Sp.
p. , Nitrosomonas, Nitrobactor, and Pseudomonas.

Further, if the apparatus is configured to include a water temperature measuring means for measuring the water temperature in the pool and a heating means controlled based on the measured water temperature by the water temperature measuring means for heating the water, It is possible to control the water temperature, which was impossible with a conventional fishing pond installed in a basin. The dissolved oxygen concentration measuring means for measuring the dissolved oxygen concentration in the water in the pool and the dissolved oxygen concentration measured by the dissolved oxygen concentration measuring means are controlled to dissolve oxygen in the water under pressure. If the apparatus is provided with an oxygen pressurizing and dissolving means for dissolving the fish, the dissolved oxygen concentration can be maintained within a predetermined range suitable for the habitat of the fish, and the weakness and death of the fish due to lack of oxygen can be prevented.
Further, when the fishing pond is intended for a saltwater fish, the fishing pond is controlled based on a salt concentration measuring means for measuring the salt concentration of seawater in the pool, and a salt concentration measured value by the salt concentration measuring means, If it is configured to have a salt concentration adjusting means for adjusting the salt concentration in the pool,
By maintaining the salt concentration within a predetermined range suitable for the fish's habitat, it is possible to prevent the fish from weakening or dying. The apparatus further includes a pH measuring means for measuring a pH value of the water in the pool, and at least one of the mixed cell input amount and the input frequency by the mixed cell input apparatus based on the pH measured by the pH measuring means. , It is possible to prevent fish from becoming weak or dead due to a change in pH due to ammonia generated by decomposition of fish excrement and the like. Furthermore, if the apparatus is provided with a tide generating means for flowing the water in the pool, it is possible to activate the fish or adjust the activity of the fish.

[0007] The second invention is provided on a pool which is installed on land and in which water is inhabited to inhabit the fish, and a circulation path for taking out water from the pool and returning it to the pool again, A method for maintaining a fishing pond comprising a filter device for filtering water, wherein a plurality of cells that decompose a predetermined substance and discharge a decomposing enzyme are provided in at least one of the filter device and the pool. The present invention is configured as a method for maintaining and managing a fishing pond, which comprises introducing the mixed bacterial cells in a predetermined amount and at a predetermined frequency. The mixing of the mixed cells may be automatically or semi-automatically performed by the mixed cells input means, or may be performed manually.

[0008]

According to the fishing pond or the method for maintaining and controlling the same according to the present invention, mixed bacterial cells and decomposing enzymes are directly stored in the filter device provided on the circulation path for circulating water in the pool or directly in the pool. It is fed at a fixed rate and at a predetermined frequency. The injected bacteria and decomposing enzymes decompose seawater contaminants such as food left over by fish, fish excrement, fish carcasses, etc., and convert them into harmless substances, so the water in the pool is efficiently purified. Is done.
Furthermore, the above-mentioned decomposing enzyme is taken into the body of the fish in the pool, where it functions to assist digestion. Therefore, the digestion of fish can be promoted and the appetite of fish can be increased by adding the mixed cells and the decomposing enzyme. In other words, the appetite of the fish can be controlled by the timing and the amount of the mixed bacterial cells and the degrading enzymes, thereby improving the fish bite regardless of the time of day and increasing the average catch. Is possible.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments and examples of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. The following embodiments and examples are mere examples embodying the present invention, and do not limit the technical scope of the present invention. Here, FIG. 1 is a schematic diagram showing a schematic configuration of a fishing pond A1 according to an embodiment of the present invention, FIG. 2 is a diagram summarizing characteristics of main cells mixed with a bio-mixture,
FIG. 3 is a diagram summarizing the characteristics of the main enzymes mixed in the biomixture.

The fishing pond A1 according to the present embodiment is a fishing pond for saltwater fish installed on land, and as shown in FIG. 1, is mainly constituted by a pool 1 in which saltwater fish can swim and swim. The pool 1 is formed at a depth of about 3 to 30 m in accordance with the type of fish that can swim therein. Pool 1
A plurality of drain ports 2 are formed near the bottom of the filter, and the drain ports 2 are connected to a filter 20 via a circulation path 3a, a pump 4, and a circulation path 3b. The seawater sent from the drain port 2 of the pool 1 to the filter 20 via the circulation path 3a, the pump 4 and the circulation path 3b is filtered for contaminants and the like, and then passed through the circulation path 3c, the pump 5 and the circulation path 3d. Through the outlet 6 formed on the side face of the pool 1 and the like, the pool 1 is returned into the pool 1. On the circulation path 3d, a flow rate adjusting valve 7 for adjusting the flow rate of seawater flowing into the pool 1 from the outlet 6 is provided. In addition, from the pool 1, the drain port 2, the circulation path 3a, the pump 4, the circulation path 3b, the filter 2
A series of paths returning to the pool 1 via the circulation path 0, the circulation path 3c, the pump 5, the circulation path 3d, and the outlet 6 is an example of a circulation path for circulating seawater. Here, the amount of seawater circulated in the pool 1 by the circulation path is determined by, for example, a pH meter 12 (an example of a pH measuring unit) provided in the pool 1.
The adjustment is made based on the H measurement value and the concentrations of nitrate and nitrite in the low-rise water of pool 1. Incidentally, the concentrations of nitrate and nitrite in the low-rise water may be periodically inspected by using, for example, a test chemical.

The pump 4 has a seawater intake pipe 8.
is connected to the seawater discharge pipe 8b, and the seawater taken in through the seawater intake pipe 8a is supplied to the circulation path 3b.
The seawater in the pool 1 can be discharged from the circulation path 3a through the seawater discharge pipe 8b. The pump 4 (an example of the salt concentration adjusting means) includes a salt concentration meter 13 provided in the pool 1.
Based on the measured value of the salt concentration by (an example of the salt concentration measuring means), the control unit (not shown) controls the intake of the sea water so as to maintain the salt concentration of the sea water in the pool 1 within a predetermined range suitable for fish inhabitation. The presence or absence of seawater from the pipe 8 and its amount are controlled. For example, when the salt concentration decreases due to a large amount of rainfall, seawater is supplied through the seawater intake pipe 8a while discharging fresh water having a low specific gravity from the overflow discharge port 18. The seawater intake pipe 8 may be directly connected to the sea, or may be connected to a water tank for storing seawater transported by a truck or the like. The seawater in the pool 1 is discharged from the seawater discharge pipe 8b.
From the seawater intake pipe 8a and freshwater from the seawater intake pipe 8a.

Near the bottom of the pool 1, a boiler 9
A water temperature adjusting pipe 10 through which hot water heated by (an example of a heating means) is provided is provided. The boiler 9 is not shown so as to maintain the seawater in the pool 1 at a temperature suitable for the inhabitation of each fish based on the water temperature measured by the water temperature sensor 11 (an example of a water temperature measuring means) provided in the pool 1. It is controlled by the control unit. Further, a compressor 16 (an example of an oxygen pressurizing and dissolving means) for pressurizing and dissolving oxygen in seawater flowing in the circulation path 3c is connected to the circulation path 3c. The compressor 16 measures the dissolved oxygen concentration of the seawater in the pool 1 based on the measured value of the dissolved oxygen concentration in the seawater by the dissolved oxygen meter 14 (an example of a dissolved oxygen concentration measuring means) provided in the pool 1. It is controlled by a control unit (not shown) so as to maintain the range within a predetermined range suitable for fish's habitat. Further, a stirrer 15 (an example of a tidal current generating means) for generating a tidal current is provided in the pool 1, whereby the fish can be activated or the activity of the fish can be adjusted. In addition, the pool 1 from the outlet 6
The tidal current can also be adjusted by the flow rate of seawater flowing into the inside (another example of tidal current generating means).

In the vicinity of the pool 1, there is provided a bio-culture tank 17 for culturing a plurality of types of cells.
A mixture of each of the cells cultured in the bio-culture tank 17 and a plurality of types of enzymes (hereinafter, referred to as a bio-mixture) is placed in the tank of the filter 20 and the pool 1 (either one may be used). A predetermined amount and a predetermined frequency are supplied. The input of the bio-mixture may be performed automatically or semi-automatically using an automatic input device (an example of a mixed microbial cell input means), or may be performed manually. still,
The compressor 16 for supplying oxygen is also connected to the bio-culture tank 17. The main types of cells cultured in the bio-culture tank 17 are Bacillus subtilis and Bacillus licheniformis (B).
acillus Licheniformis), Lactobacillus (Lactobacill)
us), Nitrosomonas, Nitrobactor
(Nitrobacter), Rhizopus, Aspergillus, Pseudomonas and the like. Fig. 2 shows the characteristics of the main cells.

Among the above cells, Bacillus subtilis and Bacillus licheniformis (an example of Bacillus Spp.) Both decompose organic substances such as sugars, fats and proteins into simple substances (amino acids in the case of proteins). have. In the present embodiment, both are used because Bacillus subtilis is weak to heat and Bacillus licheniformis is relatively strong to heat. The amino acids from which the protein has been degraded are taken up by the Bacillus subtilis, Bacillus licheniformis itself, and other cells, and as a result, ammonia is excreted. The above-mentioned Nitrosomonas and Nitrobacter are responsible for oxidizing ammonia, which is excreted from cells or excreted as excrement from fish, to nitric acid by the above-described process. That is, Nitrosomonas oxidizes ammonia to nitrous acid,
Nitrobacter oxidizes nitrous acid to nitric acid. Pseudomonas decomposes, for example, the nitric acid produced by the Nitrobacter to nitrogen. In addition, other Lactobacillus, Resorbes, and Aspergillus also have a function of decomposing predetermined substances. Furthermore, each of the above-mentioned cells discharges a predetermined decomposing enzyme. The discharged decomposing enzymes also have the function of decomposing predetermined substances. However, since the amount of the decomposing enzyme discharged from the cells is small, the bio-mixture contains the cells together with the cells, such as protease (Protease), amylase, lactase, and lipase (Lipaze).
ase), hemicellulase, cellulase (C
ellulase). FIG. 3 shows the characteristics of the main degrading enzymes mixed in the bio-mixture. By injecting the bio-mixture of each of the above cells and degrading enzyme into seawater, the food left over by the fish, the excrement of the fish,
Contaminants of seawater such as dead fish are decomposed, and seawater can be purified efficiently.

In addition, the above-mentioned cells and decomposing enzymes which have been introduced into seawater are taken into the fish in the pool 1. Here, most of the above-mentioned cells are killed in the body of the fish, but the decomposing enzyme is alive and helps digestion in the body of the fish. Therefore, by introducing the above-mentioned bio-mixture, digestion of fish can be promoted, and appetite of fish can be increased. In other words, the appetite of the fish can be controlled by the timing and the amount of the bio-mixture to be introduced, so that the fish bite can be improved irrespective of the time zone and the fishing results can be increased on average. is there. The ratio of each cell and the degrading enzyme in the bio mixture may be set to an appropriate ratio in consideration of the balance of each cell in the food chain.

The input amount and the input frequency of the bio-mixture are determined, for example, by using a pH meter 12 provided in the pool 1.
PH measured by or nitrate of low water in pool 1
Adjusted based on nitrous acid concentration. The change in pH due to ammonia generated by the decomposition of fish excrement causes the fish to be weakened and dies, and the nitric acid and nitrous acid generated after the decomposition of ammonia accumulate at the bottom of pool 1 due to its large specific gravity. Toxicity may cause bottom fish such as flounder to die. If necessary, increase the input amount and input frequency of the bio-mixture to increase the ammonia, nitric acid,
By promoting the decomposition of nitrous acid, it is possible to maintain the seawater in the pool 1 in an optimal state for fish to live.

As described above, in the fishing basin A1 according to the present embodiment, the bio-mixture obtained by mixing the predetermined bacteria and the predetermined degrading enzyme in the filter 20 and the pool 1 has a predetermined input amount and an input frequency. Because it is configured to be input in
Although it is a closed fishing pond installed on land, it is possible to efficiently purify the seawater in the pool and maintain an environment suitable for fish habitat at all times. In addition, the degrading enzyme discharged from the cells or mixed with the bio-mixture is taken into the fish body in the pool to promote digestion,
In order to increase the appetite of fish, the appetite of the fish can be controlled by the timing and the amount of the above-mentioned bio-mixture, so that the fish bite can be improved regardless of the time zone and the average catch can be improved. It is possible. The water temperature in the pool is measured by a water temperature sensor 11.
The dissolved oxygen concentration is controlled by the compressor 16 based on the measured value of the dissolved oxygen concentration by the dissolved oxygen meter 14 by controlling the heating of the boiler 9 based on the measured water temperature, and the salt concentration is determined by the salt concentration measured by the salt concentration meter 13. By controlling the intake of seawater by the pump 4, the pH value becomes p
The concentration of nitrate and nitrite can be adjusted by adjusting the input amount and the input frequency of the bio mixture based on the pH value measured by the H meter 12 or by controlling the circulation amount of seawater. Alternatively, by controlling the amount of circulation of seawater, it is possible to maintain a state suitable for fish inhabitation. Furthermore, the stirrer 15 installed in the pool 1
It is also possible to generate a tide in the pool 1 by the seawater flowing into the pool 1 from the outlet 6 and thereby to activate the fish, or to adjust the fish activity by adjusting the activity of the fish.

[0018]

A speaker may be installed in the pool 1 to activate the fish by playing music such as classical music. In this case, on the contrary, it is also possible to generate an unpleasant sound for the fish and inactivate the fish, so that the activity of the fish can be adjusted to adjust the biting of the fish. The types of various cells and enzymes contained in the bio-mixture are not limited to those described above. Any material can be used as long as it can efficiently decompose contaminants in seawater such as food left over by fish, fish excrement, and dead fish. Although the fishing basin A1 according to the above-described embodiment has been described for a saltwater fish, it can be similarly applied to a land-based fishing basin for freshwater fish, except for the configuration related to the control of the salt concentration. Of course, it is necessary to appropriately adjust the type of cells contained in the bio-mixture according to the fresh water.

[0019]

As described above, the first aspect of the present invention is a pool that is installed on land and has water therein to inhabit a fish, and a circulation that takes out water from the pool and returns it to the pool again. A filter device provided on a path for filtering the water, and a mixed bacterium in which a plurality of cells that decompose a predetermined substance and discharge a decomposing enzyme are mixed in at least one of the filter device and the pool. It is configured as a fishing pond characterized by comprising a mixed microbial cell input means for inputting the body, so that it is a closed fishing pond installed on land, but the mixed microbial cells and the decomposition Enzymes can efficiently purify the water in the pool and maintain an environment that is always suitable for fish. In addition, the decomposing enzymes that are excreted from the above-mentioned cells or added separately are taken into the fish body in the pool to promote digestion,
In order to increase the appetite of fish, the appetite of the fish can be controlled by the amount and frequency of the mixed bacterial cells and degrading enzymes, so that the fish bite can be improved regardless of the time zone and the fishing results can be improved on average. It is possible to

Further, if the apparatus is provided with a water temperature measuring means for measuring the water temperature in the pool and a heating means controlled based on the measured water temperature by the water temperature measuring means for heating the water, It is possible to control the water temperature, which was impossible with a conventional fishing pond installed in a basin. The dissolved oxygen concentration measuring means for measuring the dissolved oxygen concentration in the water in the pool and the dissolved oxygen concentration measured by the dissolved oxygen concentration measuring means are controlled to dissolve oxygen in the water under pressure. If the apparatus is provided with an oxygen pressurizing and dissolving means for dissolving the fish, the dissolved oxygen concentration can be maintained within a predetermined range suitable for the habitat of the fish, and the weakness and death of the fish due to oxygen deficiency can be prevented.
Further, when the fishing pond is intended for a saltwater fish, the fishing pond is controlled based on a salt concentration measuring means for measuring the salt concentration of seawater in the pool, and a salt concentration measured value by the salt concentration measuring means, If it is configured to have a salt concentration adjusting means for adjusting the salt concentration in the pool,
By maintaining the salt concentration within a predetermined range suitable for the fish's habitat, it is possible to prevent the fish from weakening or dying. The apparatus further includes a pH measuring means for measuring a pH value of the water in the pool, and at least one of the mixed cell input amount and the input frequency by the mixed cell input apparatus based on the pH measured by the pH measuring means. , It is possible to prevent fish from becoming weak or dead due to a change in pH due to ammonia generated by decomposition of fish excrement and the like. Furthermore, if the apparatus is provided with a tide generating means for flowing the water in the pool, it is possible to activate the fish or adjust the activity of the fish.

According to a second aspect of the present invention, there is provided a pool which is installed on land and in which water is inhabited and in which fish live, and a circulation path for taking out water from the pool and returning it to the pool again, A method for maintaining a fishing pond comprising a filter device for filtering water, wherein a plurality of cells that decompose a predetermined substance and discharge a decomposing enzyme are provided in at least one of the filter device and the pool. Since the method is configured as a method for maintaining and managing a fishing basin in which the mixed mixed cells are injected at a predetermined amount and at a predetermined frequency, the mixed cells and the separately injected cells can be input similarly to the first invention. It is possible to efficiently purify the water in the pool by using the decomposing enzyme and always maintain an environment suitable for fish inhabitation. In addition, the degrading enzyme discharged from the above-mentioned cells or separately input is taken into the body of the fish in the pool to promote digestion and increase the appetite of the fish. In addition, the appetite of fish can be controlled by the input frequency and the frequency of feeding, so that it is possible to improve the bite of the fish regardless of the time zone and improve the average catch.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a schematic configuration of a fishing pond A1 according to an embodiment of the present invention.

FIG. 2 is a diagram summarizing the characteristics of main cells mixed with a biomix.

FIG. 3 is a diagram summarizing characteristics of main enzymes mixed in a biomixture.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pool 2 ... Drain outlet 3a, 3b, 3c ... Circulation path 4, 5 ... Pump 6 ... Outlet 7 ... Flow control valve 8a ... Seawater intake pipe 8b ... Seawater discharge pipe 9 ... Boiler (an example of a heating means) 10 … Water temperature adjustment pipe 10 11… water temperature sensor (one example of water temperature measuring means) 12… pH meter (one example of pH measuring means) 13… salt concentration meter (one example of salt concentration measuring means) 14… dissolved oxygen meter (dissolved oxygen concentration measurement) Example of means) 15: Stirrer (example of tide generating means) 16: Compressor (example of oxygen pressurizing and dissolving means) 17: Bio-culture tank 18: Overflow discharge port 20: Filter

Claims (16)

[Claims] 1. A filter that is provided on land and is provided on a swimming pool for injecting water therein and inhabiting a fish, and a circulation path for taking out water from the pool and returning it to the pool again, and filtering the water. And a mixed cell input means for inputting a mixed cell mixed with a plurality of cells that decompose a predetermined substance and discharge a decomposing enzyme into at least one of the filter device and the pool. Fishing pond characterized by doing. 2. The fishing pond according to claim 1, wherein a predetermined degrading enzyme is introduced together with the mixed cells by the mixed cells input means. 3. The method according to claim 1, wherein the mixed cells are Bacillus spp. 3. The fishing pond according to claim 1, comprising Nitrosomonas, Nitrobactor, Pseudomonas. 4. A water temperature measuring means for measuring a water temperature in the pool, and a heating means for controlling the water temperature measured by the water temperature measuring means and heating the water. The fishing pond described in any of the above. 5. A dissolved oxygen concentration measuring means for measuring the concentration of oxygen dissolved in water in the pool, and the dissolved oxygen concentration is controlled based on the dissolved oxygen concentration measured by the dissolved oxygen concentration measuring means. The fishing pond according to any one of claims 1 to 4, further comprising oxygen pressure dissolving means for dissolving under pressure. 6. A salinity concentration measuring means for measuring a salinity concentration of seawater in the pool when the fishing basin is intended for a saltwater fish, and a salinity concentration value measured by the salinity concentration measuring means. 2. A salinity concentration adjusting means which is controlled and adjusts a salinity concentration in the pool.
The fishing pond according to any one of to 5. 7. A method for measuring a pH value of water in the pool.
7. An apparatus according to claim 1, further comprising an H measuring means, wherein at least one of the mixed cell input amount and the input frequency by the mixed cell input device is controlled based on the pH measured by the pH measuring means. Fishing pond described in. 8. The fishing pond according to claim 1, further comprising a tide generating means for flowing water in said pool. 9. A filter that is installed on land and is provided on a pool in which water is supplied to inhabit fish and a circulation path for taking out water from the pool and returning it to the pool again, and filtering the water. A method of maintaining and managing a fishing pond comprising a device, wherein a mixed cell body in which a plurality of cells that decompose a predetermined substance and discharge a decomposing enzyme is mixed in at least one of the filter device and the pool. A predetermined amount and at a predetermined frequency. 10. The method for maintaining and managing a fishing pond according to claim 9, wherein a predetermined degrading enzyme is introduced together with the mixed cells. 11. The method according to claim 11, wherein the mixed cells are Bacillus spp. ,
The method for maintaining and managing a fishing pond according to claim 9 or 10, wherein the method includes Nitrosomonas, Nitrobactor, and Pseudomonas. 12. A fishing pond according to claim 9, wherein a heating means for heating the water is controlled based on a water temperature measured by a water temperature measuring means for measuring a water temperature in the pool. Management method. 13. An oxygen pressurizing and dissolving means for pressurizing and dissolving oxygen in the water based on a dissolved oxygen concentration measured by a dissolved oxygen concentration measuring means for measuring an oxygen concentration dissolved in water in the pool. The method according to any one of claims 9 to 12, wherein the method comprises the steps of: 14. When the fishing pond is for a saltwater fish, the salt concentration in the pool is determined based on the salt concentration measured by the salt concentration measuring means for measuring the salt concentration of the seawater in the pool. The method according to any one of claims 9 to 13, wherein a salt concentration adjusting means for adjusting the concentration is controlled. 15. A method for controlling at least one of the mixed cell input amount and the input frequency by the mixed cell input device based on a pH value measured by a pH measuring means for measuring a pH value of water in the pool. The maintenance method for a fishing pond according to any one of claims 9 to 14. 16. The method according to claim 9, wherein the water in the pool is fluidized.