High-flow-speed flowing water breeding tank device and method

Abstract

The invention discloses a high-flow-speed flowing water culture tank device and method. Water circularly flows in a high-level water tank, a high-flow-speed flowing water culture tank and a low-level water tank through a circulating lifting pump and a circulating pipeline; the high-flow-speed flowing water breeding tank is in a winding shape, the bottom slope has different gradients, and the bottom of the high-flow-speed flowing water breeding tank is connected with the bottom of the low-position pool through a slope ramp. According to the invention, diversified habitats with still water, different flow speeds and the like are provided for fishes.

Description

Technical Field

[0001] The present invention relates to the field of fish farming, and particularly to a high-flow-rate flowing-water culture tank device and method. Background Art

[0002] The construction of water conservancy and hydropower projects has brought negative impacts on fishery resources. Artificial proliferation and release is an important means to compensate for the decline of fish resources caused by the development of water conservancy and hydropower projects, ensure the continuation of rare and endangered fish populations, and supplement economic fish resources. Currently, proliferation stations generally include water storage and sedimentation tanks, fry cultivation workshops, broodstock cultivation ponds, fingerling cultivation ponds, live bait cultivation ponds (also serving as aquaculture wastewater treatment ponds), and supporting facilities. Currently, the flow velocities provided by various types of culture ponds in proliferation stations are generally below 0.2 m / s, with relatively slow flow velocities. Fishes adapted to high-flow-rate flowing-water environments are difficult to culture or have difficulty adapting to natural river habitats after release.

[0003] Genus Euchiloglanis such as Euchiloglanis davidi and Euchiloglanis kishinouyei are benthic fishes that live in flowing water by adhering to objects such as gravel. They often live in mountain rivers with gravelly riverbeds, fast-flowing waters, move with their bellies closely attached to the stones or in stone crevices, and often lay eggs on fast-flowing and stony river beaches. Therefore, whether for living or spawning, they prefer to complete in water bodies with a certain flow velocity and substrates such as gravel. In addition, fishes such as Hucho bleekeri wangchiachii, Schizothorax prenanti, Schizothorax grahami, Percocypris pingi, and Leptobotia elongata also prefer to live in fast-flowing waters. Currently, the aquaculture facilities in fish proliferation stations are mainly circular or square pools. The water replenishment flow rate in the pools is small while the pool volume is large, and there is basically no flow velocity in the pools. These conditions are not conducive to culturing Genus Euchiloglanis and other aquatic organisms adapted to high-flow-rate flowing-water environments. It is preliminarily judged that the aquaculture facilities do not conform to the habits of Genus Euchiloglanis, which is also one of the key factors leading to the lack of breakthrough in the artificial breeding technology of Genus Euchiloglanis. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention proposes a high-flow-rate flowing-water culture tank device and method.

[0005] The specific technical solutions are as follows:

[0006] A high-flow-rate flowing-water culture tank device includes: a high-level water tank, a high-flow-rate flowing-water culture tank, a low-level water tank, a circulating lift pump, and a circulating pipeline; the bottom elevation of the high-level water tank is higher than the bottom elevation of the low-level water tank; the high-flow-rate flowing-water culture tank is serpentine and is respectively connected to the high-level water tank and the low-level water tank at both ends; the bottom of the high-flow-rate flowing-water culture tank is connected to the bottom of the low-level water tank through a ramp; the bottom slope of the high-flow-rate flowing-water culture tank has different gradients.

[0007] An enclosing partition wall is set inside the low-level water tank, a part of the partition wall is replaced by a fish-blocking grille, and the inside of the partition wall is a separation area. The elevation of the bottom surface of the separation area is lower than the elevation of the bottom surface of the low-level water tank outside the partition wall; the circulating lift pump is arranged in the separation area, one end of the circulating pipe is connected to the output end of the circulating lift pump, and the other end is connected to the high-level water tank, which is used to transport water in the low-level water tank to the high-level water tank.

[0008] Furthermore, a through hole is opened at the bottom of the high-level water pool, and the through hole is connected to the end of the high-flow water breeding tank through a pipeline. A flow regulating valve is arranged in the pipeline to control the input flow of the high-flow water breeding tank.

[0009] Furthermore, the bottom slope of the high-velocity water aquaculture tank has a value range of 0.2% to 3%.

[0010] Furthermore, a deep pool section is arranged at the bend of the high-velocity water aquaculture tank, and fine-grained sand is laid on the bottom; a shallow beach section is arranged at the relatively straight part, and coarse-grained sand is laid on the bottom.

[0011] Furthermore, the volume of the low-level water tank is greater than the sum of the volumes of the high-level water tank and the high-flow-rate water breeding tank.

[0012] Furthermore, a water supply pipe is arranged at the upper end of the side wall of the high-level water tank, and its switch is controlled by a water supply pipe control valve; a through hole is opened on the side wall corresponding to the highest liquid level of the low-level water tank to arrange an overflow pipe; a through hole is opened at the lower end or bottom of the side wall of the low-level water tank to arrange a vent pipe, and its switch is controlled by a vent pipe control valve.

[0013] Furthermore, a high-level water tank liquid level gauge is arranged in the high-level water tank, and a low-level water tank liquid level gauge is arranged in the low-level water tank. The two liquid level gauges are respectively used to detect the liquid levels in the corresponding water tanks; a water quality detector is arranged in the low-level water tank to detect its water quality data, and the water quality data includes: pH, water temperature, dissolved oxygen, and nitrite.

[0014] Furthermore, flow meters are provided at different positions of the high-flow water aquaculture tank for real-time monitoring of the flow velocity at different positions; cameras are provided above different positions of the high-flow water aquaculture tank for observing the position and activity of the swimming organisms.

[0015] Furthermore, there are a plurality of high-flow water aquaculture tanks, and different high-flow water aquaculture tanks have different bottom slopes and / or bottom qualities.

[0016] A high-velocity water aquaculture method, based on the high-velocity water aquaculture tank device, comprises the following steps:

[0017] Step 1: Arrange the high-flow water aquaculture tank device and clean it;

[0018] Step 2: Conduct water storage operation to store water with the required water depth in the low-level water tank;

[0019] Step 3: Start the circulating lift pump to enable the water to circulate successively in the high-level water tank, the high-flow-rate flowing water aquaculture tank, and the low-level water tank;

[0020] Step 4: Put in aquatic organisms and observe them in real time through detection equipment and observation equipment. If the data shows abnormalities, notify the aquaculture personnel to perform corresponding operations; the detection equipment includes a water quality monitor, a liquid level gauge arranged in the water tank, and a flow velocity meter arranged in the high-flow-rate flowing water aquaculture tank; the observation equipment includes a camera arranged above the high-flow-rate flowing water aquaculture tank.

[0021] The beneficial effects of the present invention are:

[0022] Through the design of the high-level water tank, the high-flow-rate flowing water aquaculture tank with different bottom slope gradients, the low-level water tank, the circulating lift pump, and the circulating pipeline, the present invention enables the water to circulate, is suitable for the cultivation of various fish, especially suitable for aquatic organisms adapted to high-flow-rate flowing water environments, such as Euchiloglanis spp., and provides the required high-flow-rate flowing water environment, gravel bottom substrate, and various habitats for them; at the same time, the present invention can also be used for the domestication before fish release. Description of the Drawings

[0023] Figure 1 is the plan layout diagram of the high-flow-rate flowing water aquaculture tank device in Embodiment 1 of the present invention.

[0024] Figure 2 is the 1-1 sectional view of the high-flow-rate flowing water aquaculture tank device in Embodiment 1 of the present invention.

[0025] Figure 3 is the 2-2 sectional view of the high-flow-rate flowing water aquaculture tank device in Embodiment 1 of the present invention.

[0026] Figure 4 is the 3-3 sectional view of the high-flow-rate flowing water aquaculture tank device in Embodiment 1 of the present invention.

[0027] Figure 5 is the plan layout diagram of the high-flow-rate flowing water aquaculture tank in Embodiment 2 of the present invention.

[0028] Figure 6 is the B-B longitudinal sectional view of the high-flow-rate flowing water aquaculture tank in Embodiment 2 of the present invention.

[0029] In the figure, there are a high-level water tank 1, a low-level water tank 2, a high-flow-rate flowing water aquaculture tank 3, a ramp 4, a circulating lift pump 5, a circulating pipeline 6, a flow regulating valve 7, a fish barrier 8, a water quality monitor 9, a low-level water tank level gauge 10, a high-level water tank level gauge 11, a flow velocity meter 12, a camera 13, a partition wall 14, a deep pool section 15, a shallow beach section 16, a make-up water pipe 17, a make-up water pipe control valve 18, an overflow pipe 19, a drain pipe 20, and a drain pipe control valve 21. Detailed implementation manners

[0030] The present invention will be described in detail below according to the attached drawings and preferred embodiments. The purpose and effects of the present invention will become more apparent. The present invention will be further described in detail below in conjunction with the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] Embodiment 1

[0032] As Figure 1 、 Figure 2 shown, a high-flow-rate flowing water aquaculture tank device includes: a high-level water tank 1, a low-level water tank 2, a high-flow-rate flowing water aquaculture tank 3, a ramp 4, a circulating lift pump 5, a circulating pipeline 6, a flow regulating valve 7, a fish barrier 8, a water quality monitor 9, a low-level water tank level gauge 10, a high-level water tank level gauge 11, a flow velocity meter 12, a camera 13, a partition wall 14, a deep pool section 15, a shallow beach section 16, a make-up water pipe 17, a make-up water pipe control valve 18, an overflow pipe 19, a drain pipe 20, and a drain pipe control valve 21.

[0033] The high-level water tank 1, the meandering high-flow-rate flowing water aquaculture tank 3 (in this embodiment, the high-flow-rate flowing water aquaculture tank 3 is curved without turning), and the low-level water tank 2 are arranged in sequence. The bottom elevation of the high-level water tank 1 is higher than the highest water surface elevation of the low-level water tank 2. The water in the high-level water tank 1 flows into the low-level water tank 2 through the high-flow-rate flowing water aquaculture tank 3. The low-level water tank 2 also serves as an aquaculture pond, providing a low-flow-rate habitat. The high-flow-rate flowing water aquaculture tank 3 forms habitats with different flow velocities by setting bottom slopes with different gradients. A through hole is opened at the bottom of the high-level water tank 1. The through hole is connected to one end of the high-flow-rate flowing water aquaculture tank 3 through a pipeline. A flow regulating valve 7 is arranged inside the pipeline to adjust the flow rate entering the high-flow-rate flowing water aquaculture tank 3, thereby adjusting the water level inside the high-flow-rate flowing water aquaculture tank 3. The other end of the high-flow-rate flowing water aquaculture tank 3 is connected to the low-level water tank 2. A ramp 4 is arranged at the low-level water tank 2 starting from the connection point to facilitate the movement of the aquatic organisms cultured in the low-level water tank 2 into the high-flow-rate flowing water aquaculture tank 3. In this embodiment, a flow velocity exceeding 0.6 m / s is defined as a high flow velocity.

[0034] On one side of the low - level water tank 2, an enclosing partition wall 14 is provided. Inside the partition wall 14 is a separated area, and the elevation of the bottom of the separated area is 0.5 m - 1 m lower than the bottom elevation of the water tank outside the partition wall 14; a part of the partition wall 14 is replaced by a fish - blocking grille 8, so that the water tank outside the partition wall 14 is connected to the separated area inside it. A circulating lift pump 5 is arranged in the separated area; one end of a circulating pipeline 6 is connected to the output end of the circulating lift pump 5, and the other end is connected to the high - level water tank 1. After the circulating lift pump 5 is turned on, water is lifted from the low - level water tank 2 to the high - level water tank 1 to achieve circulation. The partition wall 14 plays a role in separating the water tank area. Although the fish - blocking grille 8 allows water flow through, the partition wall 14 still has a certain control effect on the speed and direction of the water flow, which can help maintain the water flow conditions required by the circulating lift pump 5 in the separated area; the fish - blocking grille 8 plays a role in blocking aquatic organisms and large - particle impurities (including fish feces, residual bait, etc.) from entering the circulating lift pump 5, thereby protecting the equipment from blockage and damage and maintaining its normal operation.

[0035] The bottom slope of the high - velocity flowing - water aquaculture tank 3 ranges from 0.2% to 3%. Several high - velocity flowing - water aquaculture tanks 3 can be set up, and different high - velocity flowing - water aquaculture tanks 3 can have different degrees of curvature and / or bottom slopes and / or bottom substrates, so as to construct habitats with different flow velocities and / or bottom substrates; within one high - velocity flowing - water aquaculture tank 3, bottom slopes and / or bottom substrates with different slopes can also be set, so as to construct habitats with different flow velocities and / or bottom substrates within one high - velocity flowing - water aquaculture tank 3; how to specifically set the bottom slope of the high - velocity flowing - water aquaculture tank 3 is determined according to the actual situation. The flow velocity of the water can be calculated according to the Manning formula where \(v\) represents the flow velocity, \(R\) represents the hydraulic radius, \(\mu\) represents the Manning coefficient, that is, the roughness coefficient, and \(i\) represents the bottom slope. As an example, the cross - section of the high - velocity flowing - water aquaculture tank 3 is trapezoidal, with a bottom width of 1.5 m, a water depth of 0.5 m, and a top water - surface line width of 2.5 m. When the roughness coefficient is taken as 0.023, when the bottom slope is 0.2%, the calculated flow velocity can be approximately 0.63 m / s; when the bottom slope is 0.5%, the calculated flow velocity can be approximately 1.00 m / s; when the slope is 1.0%, the calculated flow velocity can be approximately 1.41 m / s; when the slope is 2.0%, the calculated flow velocity can be approximately 1.99 m / s; when the slope is 3.0%, the calculated flow velocity can be approximately 2.44 m / s. In addition, the flow - field conditions (including parameters such as flow velocity, water depth, etc.) can also be determined by methods such as numerical simulation.

[0036] Furthermore, gravel is embedded at the bottom of the high - velocity flowing - water aquaculture tank 3, which can be specifically set according to the need of the roughness coefficient. Obstacles that do not block the water flow can also be set with reference to the imitation of natural fishways, and the obstacles can be built with pebbles or directly stacked. Green plants can be planted on both sides of the high - velocity flowing - water aquaculture tank 3 to create some landscape effects and better simulate the natural environment.

[0037] Furthermore, deep pools 15 and shallow shoals 16 are arranged in the high-flow aquaculture tank 3 by imitating the natural river habitat. Among them, the deep pool 15 is generally arranged at the bend of the high-flow aquaculture tank 3, and its cross-section is as shown in Figure 3 . The overall water depth is relatively large, and fine-grained sand is laid at the bottom. Small wooden blocks can also be placed to simulate a natural river. The shallow shoal 16 is generally arranged in the relatively straight part, and its cross-section is as shown in Figure 4 . The bottom elevation is relatively uniform, the overall depth is relatively shallow, and the flow velocity is relatively fast. Coarse-grained sand is laid at the bottom.

[0038] Furthermore, the slope of the ramp 4 is 1:n, and n can be determined according to the site size, fish habits, etc. The ramp 4 can connect the bottom of the high-flow aquaculture tank 3 with the bottom of the low-level water tank 2. Taking the genus Euchiloglanis as an example, this structure can adapt to the habit of the genus Euchiloglanis to move with its abdomen close to the stone, facilitating the entry of Euchiloglanis fish from the low-level water tank 2 into the high-flow aquaculture tank 3.

[0039] Furthermore, the volume of the low-level water tank 2 should be greater than the sum of the volumes of the high-level water tank 1 and the high-flow aquaculture tank 3, and it is ensured that after all the water enters the low-level water tank 2, the highest water level is more than 0.3 m from the tank top to prevent overflow when the circulating lift pump 5 or the flow regulating valve 7 is damaged and all the water enters the low-level water tank 2.

[0040] Furthermore, a through hole is opened at the upper end of the side wall of the high-level water tank 1 to arrange the water supply pipe 17. A water supply pipe control valve 18 is arranged in the water supply pipe 17, and the water supply pipe control valve 18 can be switched on and off under the control of the control end, thereby controlling whether to supplement water to the entire aquaculture tank device. A through hole is opened on the side wall of the low-level water tank 2 to arrange the overflow pipe 19. The position of the through hole is the required highest liquid level of the low-level water tank 2. The overflow pipe 19 is always kept unobstructed. When the water in the low-level water tank 2 exceeds the highest liquid level, the excess water automatically drains through the overflow pipe 19. A through hole is opened at the lower end or the bottom of the side wall of the low-level water tank 2 to arrange the drain pipe 20. A drain pipe control valve 21 is arranged in the drain pipe 20, and it can be switched on and off under the control of the control end, thereby controlling whether to drain water.

[0041] A high-level water tank liquid level meter 11 is arranged in the high-level water tank 1, which is used to detect the liquid level in the high-level water tank 1 and transmit it to the control end; a low-level water tank liquid level meter 10 is arranged in the low-level water tank 2, which is used to detect the liquid level in the low-level water tank 2 and transmit it to the control end; the control end comprehensively analyzes the liquid level data of the two water tanks to determine whether water replenishment is needed. A water quality monitor 9 is also arranged in the low-level water tank 2, and its main monitoring indicators include: pH, water temperature, dissolved oxygen, nitrite and other parameters. The water quality related data obtained by the water quality monitor 9 is transmitted to the control end. If the monitoring value is abnormal, the control end reminds the user to process it to ensure that the device can meet the survival needs of aquatic organisms. Flow meters 12 are arranged at different bottom slope positions inside the high-flow water breeding tank 3, which are used to monitor the flow rate at different positions in real time. Cameras 13 are arranged above different positions of the high-flow water breeding tank 3 to observe the position and activity of fish swimming.

[0042] Embodiment 2

[0043] When the high-velocity water aquaculture tank device needs to be arranged indoors, its overall space is limited. The high-velocity water aquaculture tank 3 in the first embodiment cannot be placed without rotation, so this embodiment is proposed. The high-velocity water aquaculture tank device in this embodiment also includes a high-level water pool 1, a low-level water pool 2, and a high-velocity water aquaculture tank 3. One end of the water inlet pipe of the high-velocity water aquaculture tank 3 is connected to the high-level water pool 1, and one end of the water outlet pipe is connected to the low-level water pool 2. Figure 5 and Figure 6 As shown, the high-flow water aquaculture tank 3 is S-shaped, and the bottom slope and / or bottom quality before and after the rotation can be set to be different to form habitats with different flow rates; the rest of the structure is the same as that of embodiment 1. The S-shaped rotation design greatly saves the length required for the device.

[0044] Furthermore, if the indoor space is not sufficient to support the arrangement of two water pools, only the low-level water pool 2 can be retained, with one end of the circulation pipe 6 connected to the circulation lift pump 5, and the other end directly connected to the water inlet pipe of the high-flow water breeding tank 3 (i.e., the end with a higher elevation), thereby further reducing the space occupied by the device.

[0045] Based on the above-mentioned high-flow water aquaculture tank device, this embodiment also proposes a high-flow water aquaculture method, which specifically includes the following steps:

[0046] Step 1: Arrange the above-mentioned high-flow water aquaculture tank device as required and clean it.

[0047] Step 2: Perform water storage operation to store water of a certain depth in the low-level water pool 2.

[0048] Step 3: Start the circulating lift pump 5, the detection devices (including the water quality monitor 9, the low-level water tank level gauge 10, and the flow velocity meter 12), and the observation device (i.e., the camera 13) to make the water circulate in the high-flow aquaculture tank device.

[0049] Step 4: Put in aquatic organisms and observe them in real time through the detection devices and the observation device.

[0050] In the above process, if the control terminal determines that the water quality-related data detected by the water quality monitor 9 is abnormal, it will remind the aquaculture personnel to replace the water body. Specifically, depending on the severity, it is decided whether to replace part of the water or transfer the aquatic organisms first. Then, the control terminal controls the opening of the drain pipe control valve 21, and all the water is drained through the drain pipe 20. After the device is cleaned, step 2 is executed again; when replacing the water body, the water pump or the drain pipe 20 can be used according to actual needs. If the level detected by the low-level water tank level gauge 10 is higher than the set maximum liquid level, the excess water is automatically discharged through the overflow pipe 19; if the detected level is lower than the set minimum liquid level, the control terminal controls the opening of the water supply pipe control valve 18, and water is supplied to the device through the water supply pipe 17.

[0051] Those of ordinary skill in the art can understand that the above are only preferred examples of the invention and are not used to limit the invention. Although the invention has been described in detail with reference to the foregoing examples, for those skilled in the art, they can still modify the technical solutions described in the foregoing examples or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, etc. made within the spirit and principle of the invention shall be included within the protection scope of the invention.

Claims

1. A high-flow water aquaculture tank device, characterized in that: include: A high-level water tank, a high-velocity water breeding tank, a low-level water tank, a circulation lift pump, and a circulation pipeline; the bottom elevation of the high-level water tank is higher than the bottom elevation of the low-level water tank, the high-velocity water breeding tank is a meandering type, and its two ends are respectively connected to the high-level water tank and the low-level water tank; the bottom of the high-velocity water breeding tank is connected to the bottom of the low-level water tank through a ramp; the bottom slope of the high-velocity water breeding tank has different slopes; An enclosing partition wall is set inside the low-level water tank, a part of the partition wall is replaced by a fish-blocking grille, and the inside of the partition wall is a separation area. The elevation of the bottom surface of the separation area is lower than the elevation of the bottom surface of the low-level water tank outside the partition wall; the circulating lift pump is arranged in the separation area, one end of the circulating pipe is connected to the output end of the circulating lift pump, and the other end is connected to the high-level water tank, which is used to transport water in the low-level water tank to the high-level water tank.

2. The high-velocity water aquaculture tank device according to claim 1, characterized in that: A through hole is provided at the bottom of the high-level water pool, and the through hole is connected to the end of the high-flow-rate water breeding tank through a pipeline. A flow regulating valve is arranged in the pipeline to control the input flow of the high-flow-rate water breeding tank.

3. The high-flow-rate water aquaculture tank device according to claim 1, characterized in that: The bottom slope of the high-velocity water breeding tank has a value range of 0.2% to 3%.

4. The high-flow-rate water aquaculture tank device according to claim 1, characterized in that: A deep pool section is arranged at the bend of the high-velocity water aquaculture tank, and fine-grained sand is laid on the bottom; a shallow beach section is arranged at the relatively straight part, and coarse-grained sand is laid on the bottom.

5. The high-velocity water aquaculture tank device according to claim 1, characterized in that: The volume of the low-level water tank is greater than the sum of the volumes of the high-level water tank and the high-flow-rate water breeding tank.

6. The high-velocity water aquaculture tank device according to claim 1, characterized in that: A water supply pipe is arranged at the upper end of the side wall of the high-level water tank, and its switch is controlled by a water supply pipe control valve; a through hole is opened on the side wall corresponding to the highest liquid level of the low-level water tank to arrange an overflow pipe; a through hole is opened at the lower end or bottom of the side wall of the low-level water tank to arrange a vent pipe, and its switch is controlled by a vent pipe control valve.

7. The high-velocity water aquaculture tank device according to claim 1, characterized in that: A high-level water tank liquid level gauge is arranged in the high-level water tank, and a low-level water tank liquid level gauge is arranged in the low-level water tank, and the two liquid level gauges are respectively used to detect the liquid levels in the corresponding water tanks; A water quality detector is arranged in the low-level water pool to detect its water quality data, and the water quality data includes: pH, water temperature, dissolved oxygen, and nitrite.

8. The high-velocity water aquaculture tank device according to claim 1, characterized in that: Flow meters are arranged at different positions of the high-flow water breeding tank for real-time monitoring of the flow velocity at different positions; cameras are arranged above different positions of the high-flow water breeding tank for observing the position and activity of the swimming organisms.

9. The high-velocity water aquaculture tank device according to claim 1, characterized in that: There are a plurality of high-flow-rate water breeding tanks, and different high-flow-rate water breeding tanks have different bottom slopes and / or bottom qualities.

10. A high-velocity water aquaculture method, implemented based on the high-velocity water aquaculture tank device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Arrange the high-flow water aquaculture tank device and clean it; Step 2: Perform water storage operation to store water of required depth in the low-level water pool; Step 3: Start the circulation pump to circulate water in the high-level water tank, high-flow water breeding tank, and low-level water tank in turn; Step 4: Put aquatic organisms in and observe in real time through detection equipment and observation equipment. If the data is abnormal, notify the breeding personnel to perform corresponding operations; the detection equipment includes a water quality monitor and a liquid level meter arranged in the pool, and a flow meter arranged in a high-flow water breeding tank; The observation equipment comprises a camera arranged above a high-flow-rate water aquaculture tank.

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