345results about How to "Improve fishing efficiency" patented technology

The invention, which relates to the technical field of ocean engineering, discloses a bamboo-based offshore floating type unmanned marine ranch system comprising a facility module, a data integration and processing module, and an interaction module. Wherein the facility module comprises a self-repairing bamboo-based floating platform, an intelligent sensor network, a camera monitoring system, an automatic bait casting machine, an intelligent water quality purification device and automatic grading, sorting and fishing equipment; the data integration and processing module comprises a cloud platform, an artificial intelligence algorithm and a big data analysis platform; the interaction module comprises a VR breeding experience system, a remote monitoring and management system and an early warning system. According to the method, the bamboo is used as a basic material of the floating platform, compared with traditional plastic or metal materials, the bamboo has higher renewability and lower carbon emission, the self-repairing coating technology is adopted, tiny cracks on the surface of the bamboo can be automatically repaired, the service life of the floating platform is prolonged, and the maintenance cost is reduced.

The utility model discloses a lifting type water conservancy gate, and belongs to the field of water conservancy gates. A lifting type water conservancy gate comprises a salvage frame, a winch is fixedly installed on a gateway and connected with the salvage frame through a pull rope, a through hole is formed in one side of the salvage frame, a baffle abuts against the through hole in a matched mode, the baffle is rotationally connected with the salvage frame, gears are fixedly connected to the two ends of the baffle, and racks meshed with the gears are fixedly connected to the gateway. A collecting frame is fixedly connected to the gateway and used for collecting sundries discharged by the fishing frame. The fishing frame is driven by the winch to vertically ascend and descend, the fishing frame collects garbage and sundries on the water after ascending from the water, when the fishing frame ascends till the gear is meshed with the rack, the baffle rotates to be opened, the sundries in the fishing frame are discharged into the collecting frame through the baffle, and effective cleaning of the garbage and sundries on the water is achieved.

The invention provides a pomacea canaliculata underwater intelligent identification and active capturing device which comprises a cabin, a capturing mechanical arm and a driving mechanism, the capturing mechanical arm is arranged at the front end of the advancing direction of the cabin, the tail end of the capturing mechanical arm is connected with the cabin, and the driving mechanism is arranged at the rear end of the advancing direction of the cabin. The universal cutting machine is arranged at the front end of the advancing direction of the cabin body, and a master control module, a battery module, a cabin inner container, a first lighting module, a first monitoring and recognition module, a sensor module, an opening and closing door and an exit are arranged in the cabin body; the cabin inner container is connected with an opening and closing door arranged at the top of the cabin body and an outlet arranged at the bottom of the cabin body through two cabin inner container channels. A second monitoring and recognition module and a second lighting module are further arranged at the front end of the advancing direction of the cabin body. According to the device, aquatic plants or sundries blocking the view field and the path are cleaned, the device freely moves underwater, automatic observation, intelligent recognition, capturing and storage are integrated, the labor cost is reduced, and the environment damage caused by manual capturing work is avoided.

The invention belongs to the technical field of river water pollution treatment, and particularly relates to a purification treatment device for treating river water pollution, which comprises a base, a purification box is rotatably arranged in the middle of the upper end face of the base, a filter screen is fixedly connected to one side of an inner cavity of the purification box, and a water outlet pipe is communicated and fixedly connected to the water outlet end of a water suction pump. The end of the water outlet pipe extends to an inner cavity of the purification box, and the purification box is further provided with an adjustable fishing mechanism used for fishing garbage on the water surface. According to the device, the position of the clamping shell can be adjusted according to the position of the floating object by utilizing the adjustable salvage mechanism, so that the clamping shell moves within a range, the process of frequently moving the ship body is omitted, the salvage flexibility is improved, the floating object clamped by the clamping shell can be transferred into the purification box to be placed, and the service life of the floating object is prolonged. And therefore, repeated salvage is avoided.

The utility model discloses a waste salvaging device for hydraulic engineering, which comprises a recovery shell, a salvaging component is mounted on the recovery shell, the salvaging component comprises a driving machine, a driving bevel gear, a transmission shaft, a transmission bevel gear, a driving roller, a transmission roller, a salvaging conveying belt and a movable impeller, and the driving machine is connected with the transmission shaft through the driving bevel gear; the transmission shaft extends into the shell and is provided with a driving roller, the driving roller is connected with the transmission roller through a fishing conveying belt, the shaft end of the transmission shaft is provided with a movable impeller, and a filter screen is arranged beside the driving roller. The driving machine drives the transmission shaft to rotate and drives the driving roller to rotate, the salvaging conveying belt drives the movable impeller to rotate, floating waste on the water surface is salvaged, the blocking strip is matched with the salvaging conveying belt to grab fixed waste, falling off is avoided, the salvaging efficiency and the success rate are improved, and the filter screen collects the waste and drains water. The monitoring equipment monitors the water surface condition in real time, the fishing progress and effect are convenient to observe, and the practicability of the device is improved.

The utility model relates to the technical field of sewage treatment, and discloses a sewage surface scum removing structure which comprises a salvage bed, the salvage bed comprises two side plates and a conveying belt, a collecting box is fixedly installed between the two side plates, the conveying belt is obliquely arranged between the two side plates, a driving machine is fixedly installed on the side plates, the driving machine drives the conveying belt to operate, and the collecting box is fixedly installed on the conveying belt. Scum on the water surface is conveyed into the collecting box through conveying of the conveying belt, floating barrels are fixedly mounted on the outer sides of the two side plates, a mounting frame is fixedly mounted on the front side of the fishing bed, and a rotating water wheel is rotationally mounted in the mounting frame. According to the sewage surface scum removing structure, the conveying belt and the collecting box are arranged in the fishing bed, water surface scum is conveyed into the collecting box through the conveying belt and treated in a centralized mode, the fishing bed floats on the water surface and can be moved at any time and actively close to the scum according to needs, the fishing work efficiency is greatly improved, and using is more flexible and convenient.

The invention discloses a deep sea aquaculture net cage which comprises a buoyancy pedal, a plurality of air bags are arranged at the bottom of the buoyancy pedal and used for providing buoyancy and adjusting the height of the buoyancy pedal; the buoyancy ring is arranged at the bottom of the buoyancy pedal, a fishing net is fixedly connected to the bottom of the buoyancy ring, a bottom net is fixedly connected to the bottom of the fishing net, and a screening net is arranged in the bottom net in a lifting mode and used for shortening the height of the fishing net and screening fishes; by arranging a cleaning ring and a knocking rod, the rope can be cleaned when the rope is wound, impurities such as salt and seaweed can be removed, sounds can be generated by knocking a bell disc, fish schools can be repelled, and the screening efficiency is improved; due to the reciprocating motion of the first sliding block and the second sliding block, ordered arrangement of the ropes is ensured, the knotting phenomenon is prevented, and the service life of the ropes is prolonged; by arranging the feed scattering assembly, uniform scattering of fish feed is achieved, waste is reduced, and the utilization rate of the feed is increased.

The utility model discloses a lead slag fishing device for storage battery grid production, and relates to the technical field of storage battery grid production. The device comprises a linear driving mechanism which is horizontally arranged; the linear driving mechanism is vertically connected with a lifting mechanism; the lower portion of the lifting mechanism is horizontally connected with a lead slag storage box with the top of an open structure. A rotary driving mechanism is arranged on the lead slag storage box; the rotary driving mechanism is connected with a slag shoveling hopper; and the rotary driving mechanism is used for pouring the lead slag in the slag shoveling hopper into the lead slag storage box by driving the slag shoveling hopper to rotate. The lead slag salvage device is reasonable in structural design and convenient to use, effectively improves the lead slag salvage efficiency and effect, and has high market application value.

The invention discloses a device for salvaging a drill rod in a geological drilling hole, and relates to the technical field of drill rod salvaging, the device comprises a support frame slidably mounted on a U-shaped frame, a through shaft type stepping motor is fixed in the middle of the support frame, the through shaft type stepping motor is in up-down transmission connection with a threaded rod, and a detection salvaging structure is fixed at the bottom of the threaded rod; the drilling rod can be accurately positioned and clamped through the camera module, the detection fishing structure is combined, when the drilling rod enters downwards, mineral oil is smeared on the inner wall of a drilling hole through the lubricating structure, friction force is reduced, and when the double-clamping structure is used for clamping, the broken drilling rod is folded and clamped through the multiple clamping mechanisms; the broken drill rod is tightly wrapped by the inflation bag and the connected protruding block, the connecting friction force of the broken drill rod is large, the inner wall of the drill hole is coated with mineral oil, the friction resistance with the outside is reduced, and therefore the broken drill rod is not prone to falling off when pulled upwards, the drill rod is stably fished out of the drill hole, and the fishing efficiency and the success rate are greatly improved.

The utility model discloses a grabbing type sea cucumber fishing robot. The sea cucumber collecting robot comprises a robot frame, a five-degree-of-freedom mechanical arm and a sea cucumber collecting device, a mechanical arm base and a sea cucumber collecting device are fixedly arranged on the top of the robot frame, a sealing bin is fixedly arranged at the bottom of the robot frame, and vertical propellers and horizontal propellers are fixedly arranged on the periphery of the robot frame. And the synchronous pulley II is driven by the stepping motor I to realize the rotary motion of the mechanical arm. According to the underwater robot, the five-degree-of-freedom mechanical arm and the eight-shaft propeller are adopted, and free movement and flexible grabbing of the robot under water are achieved. The sea cucumber catching robot can replace manpower to catch sea cucumbers and is not limited by seasons. The water pressure borne by the device is far higher than that borne by human beings, so that the device has higher safety. The sea cucumber catching robot is used for replacing manual work, and potential hazards of the marine environment to the body health of a caught person are effectively avoided.

The invention belongs to the technical field of solar energy, and particularly relates to a side opening type strong magnetic fisher which comprises a base body, a connector is fixedly connected to the upper portion of the base body, a baffle is fixedly welded to the lower portion of a cylinder of the base body, a bottom plate is fixedly welded to the interior of a semicircular cylinder of the base body, and an insulating partition plate is arranged on the bottom plate. A strong magnetic positioning block and a strong magnet are arranged on the insulating partition plate, and the strong magnetic positioning block, the strong magnet, the insulating partition plate and the bottom plate are fixed together through screws. Due to the fact that the shifting plate is arranged on the outer side of the semicircular cylinder of the novel side-opening type strong magnetic fisher, a large gap is formed between the well wall and the semicircular cylinder, drilling fluid can return upwards easily, the semicircular cylinder can be protected against excessive abrasion, and the service life of the side-opening type strong magnetic fisher is prolonged.

The utility model discloses a large-water-surface ecological fishery breeding net cage which comprises a mounting plate and a fishing mechanism. A fixing frame is arranged at the lower end of the mounting plate, mesh covers are arranged in the fixing frame and in the middle of the lower end of the fixing frame, supporting plates are arranged on the left side and the right side of the upper end of the mounting plate respectively, the upper ends of the supporting plates are fixedly connected with the lower end of a connecting plate, a mounting groove is formed in the middle of the upper end of the connecting plate, and air bags are arranged on the edges of the lower end of the mounting plate. Air inlet pipes are arranged in air inlets formed outside the air bags; the middle parts of the air inlet pipes are connected in series with air inlet valves; the fishing mechanism comprises a fixing rod, a mounting frame, a fishing net and a fixing plate, the large-water-surface ecological fishery breeding net cage can replace a traditional manual net casting fishing mode, self-locking can be achieved through a worm structure after the position of the fishing net is adjusted subsequently, operation is simple, and the fishing net cage is convenient to use. And the fishing efficiency is improved while the workload of personnel is reduced.

The invention provides an automatic fishing net drawing device for a fishpond, which is suitable for an automatic fishing scene of a rural fishpond and comprises a fishing net, a motor, a gear shifting mechanism, an executing mechanism and a guide mechanism. The motor drives the belt pulley to decelerate and control the start, stop and rotating speed of the motor, so that the net drawing device is driven and controlled. The net drawing device comprises a fishing net, a guide mechanism and an executing mechanism and is used for fishing fishes in a fishpond, the guide mechanism covers the fishpond in all directions by arranging a sectional type straight line, a circular guide rail and a rail sliding block along the periphery of the fishpond, and the executing mechanism achieves rotation of the first-stage winch device and the second-stage winch device in a time-sharing mode through a gear shifting mechanism. And the fishing net drawing process and the fishing net pulling process are achieved respectively. The fish catching efficiency can be improved, manual intervention and time loss are reduced, the influence on fishpond ecology is reduced, and sustainable fishery development is achieved.

The utility model relates to the technical field of aquaculture, and discloses a liftable aquaculture fishing box which comprises a main frame, a plurality of extension rods are fixedly connected to the outer wall of the main frame in a circumferential array mode, two supports are symmetrically and fixedly connected to the outer walls of the extension rods, and transmission rods are arranged on the outer walls of the two supports; a driving assembly for driving is arranged on the outer wall of the transmission rod, driving frames are fixedly connected to the outer walls, away from the two supports, of the extension rods, fourth bevel gears are arranged on the outer walls of the driving frames, threaded rods are rotationally connected to the outer walls of the fourth bevel gears, and driving blocks are in threaded connection to the outer walls of the threaded rods; according to the lifting device for the aquaculture fishing box, lifting of the aquaculture fishing box can be achieved, time and labor are saved, the fishing efficiency of the aquaculture fishing box is conveniently improved, meanwhile, one driving source synchronously drives a plurality of fishing boxes to ascend and descend, and the practicability of the device is improved.

The utility model discloses a teasing fishing float which comprises a float body and a driving mechanism used for driving the float body to move, and the driving mechanism comprises a propeller, a driver used for driving the propeller to rotate and a storage battery used for providing a power source for the driver. The float body is provided with a water inlet and a water outlet, the water outlet is provided with a partition plate, and the fishing float is stable in operation and good in fishing effect.

The invention provides a casing salvage method which comprises the steps that the lower end of a new casing is fixedly connected with a conical guide cone, the tip end of the guide cone faces downwards, and the new casing and the guide cone form a salvage part; the fishing part is put into the hydrological drill hole, and the initial gravity of the fishing part is recorded through an instrument located on the ground before the fishing part makes contact with the falling-in sleeve; the fishing part continues to be lowered so that the guide cone can be inserted into the upper end of the falling-in sleeve; rotating the new casing pipe, connecting an external thread at the lower end of the new casing pipe with an internal thread at the upper end of the falling-in casing pipe, and preliminarily judging whether the new casing pipe is in threaded connection with the falling-in casing pipe or not according to the rotating force applying condition; under the condition of preliminarily judging that the new casing pipe is connected with the falling-in casing pipe, the fishing part is lifted upwards, and whether the connection is good or not is secondarily judged according to the display of the instrument. By means of the method, a worker can confirm the connection condition of the new casing pipe and the falling casing pipe through numerical value comparison, repeated operation is avoided, the accuracy of fishing work is guaranteed, and the fishing efficiency is improved.

The cyanobacterial bloom salvaging device comprises a rubber boat, the top of the rubber boat is fixedly connected with a sewage collecting pool, the rear side of the sewage collecting pool is fixedly connected with a lifting mechanism, the top of the front side of the lifting mechanism is fixedly connected with an air flotation machine, and the air flotation machine is fixedly connected with a water outlet of the air flotation machine. A slag scraping plate is fixedly connected to the top of the air flotation machine, a shovel plate is fixedly connected to the front side of the top of the sewage collection tank, a traction rope roller is arranged in the middle of the top of the rear side of the sewage collection tank, and a positioning mechanism is fixedly connected to the middle of the rear side of the sewage collection tank; by arranging the rubber boat, the sewage collection tank, the air flotation machine, the slag scraping plate, the shovel plate, the traction rope roller and the positioning mechanism, efficient salvage and collection of cyanobacterial blooms are achieved; an operator only needs to float the whole device on the surface of a water pool through a rubber boat, and cyanobacterial blooms are conveyed into a sewage collection pool through a shovel plate and separated through an air flotation machine.

The utility model discloses a simulated fish scale magnetic soft bait which comprises a fish body, and an installation plate is arranged in the fish body. The hanging ring is connected with the mounting plate, and the hanging ring is used for hanging a fishhook; the plurality of fish scale convex blocks are arranged on the fish body, and a flow channel is formed between every two adjacent fish scale convex blocks; the magnet block is connected with the mounting plate, and the magnet block is used for adsorbing and fixing a fishhook. According to the bait, the magnet block is arranged on the belly of the fish body, the fishhook can be attracted and fixed through the magnet block, the fishhook is attached to the surface of the bionic fish body, swinging of the fishhook when the fishhook floats in water can be reduced, the possibility of winding of a fishing line is reduced, and the fishing efficiency is improved; the whole combination looks more vivid, the appearance and behaviors of real fishes are simulated, the attraction is increased, and the fishes can be hooked more easily.

The utility model relates to the technical field of overwater salvaging devices, in particular to an inland river overwater salvaging grabbing device which comprises a holding rod frame, the holding rod frame comprises an outer frame and a holding frame, the holding frame is installed in the outer frame in a sliding mode, a fixing pipe is fixedly installed at the lower end of the outer frame, an extending pipe is installed at the lower end of the fixing pipe in a sliding mode, and the extending pipe is connected with the fixing pipe. Locking bolts for locking the extension pipe are arranged on the two sides of the fixing pipe, and a center shell is fixedly installed at the lower end of the extension pipe. By arranging the slidable holding frame, an operator can conveniently adjust the holding position, through cooperation of a fixed pipe and an extension pipe and arrangement of a locking bolt, the length of the device can be adjusted according to actual fishing requirements, and the device adapts to fishing operation of different depths. And the multiple clamping claws and the driving frame are installed on the center shell, synchronous clamping of the objects can be achieved, and the fishing efficiency is improved.

The invention relates to a coastal fishery intelligent text and time sequence diagram generation algorithm and system, and aims to improve the accuracy and practicability of coastal fishery wind forecasting. According to the system, sea level average wind and horizontal air pressure gradient data of data sources such as EC-thin are acquired, and a fine wind power series grid forecasting result is generated by applying a grid forecasting calculation technology and a dynamic threshold setting method. Furthermore, the system judges the dominant wind level by using a Marking Square algorithm, and particularly performs deep learning KAN convolution algorithm correction for the wind level caused by typhoon so as to improve the forecasting precision. Finally, the system screens out wind power and wind direction data in a key period, automatically generates an intelligent text description and a time sequence diagram, and provides visual and accurate forecast information for fishermen and related mechanisms. The method has the beneficial effects that the forecasting accuracy is improved, the real-time performance and pertinence are enhanced, intelligent and visual output is realized, the emergency response capability is improved, and the sustainable development of fishery is promoted.

The application discloses a fishing device used in the technical field of phosphating, which comprises a first hook, a second hook and a third hook, the first hook is connected with the second hook and the third hook, the third hook is connected with the first hook and the second hook, the top of the first hook, the second hook and the third hook is connected with a traction part, the traction part is used for pulling the first hook, the second hook and the third hook, when the force applied on the first hook by the traction part is greater than the force applied on the second hook and the third hook, the first hook vertically rises, the second hook and the third hook downwardly incline, and the second hook and the third hook are fixed from the side or the bottom of the hanging object by the downward inclination of the second hook and the third hook.

The invention discloses a fish school tracking system for marine fishery catching, and relates to the technical field of marine fishery. The invention comprises a satellite positioning module, an underwater sonar detection module, a data processing center, a route planning module and a user interface; the satellite positioning module is used to obtain the real-time position information of the fishing boat and the fish school; firstly, a satellite positioning receiver is selected; the invention realizes accurate monitoring of the real-time position of the fishing boat and the fish school by integrating the high-precision satellite positioning module and the advanced underwater sonar detection technology, and the system can predict the movement trend of the fish school and plan the optimal route in combination with the marine environment data and the performance parameters of the fishing boat, thereby significantly improving the fishing efficiency and accuracy. Compared with the traditional fishing method, the system reduces the waste of marine resources and improves the pertinence and success rate of the fishing operation.

The application relates to the technical field of flow channel cleaning, and discloses a dam water inlet flow channel floating object cleaning device which comprises a fixing plate arranged at a dam water inlet flow channel opening, a water inlet opening is formed in the fixing plate and communicates with the dam water inlet flow channel opening, a filter plate is arranged in the water inlet opening, fixed blocking strips are fixedly installed on the filter plate, a salvage mechanism for cleaning garbage and a driving mechanism for driving the salvage mechanism to work by using water flow are arranged on the fixing plate, the salvage mechanism comprises movable rods, limiting rods, U-shaped frames and a plurality of first arc-shaped fixed strips, a plug groove and a limiting groove are formed in the upper end of the fixing plate, and the movable rods and the limiting rods are movably installed in the plug groove and the limiting groove respectively. The dam water inlet flow channel floating object cleaning device aims to solve the problems that, in the prior art, accumulated floating objects in front of a dam are cleaned by manual work, the efficiency is low, there are hidden dangers, and tree branches are easily stuck on the filter screen under the impact of water flow and are difficult to clean.

This invention provides a high-efficiency, water-saving, tiered aquaculture tank, belonging to the field of aquaculture technology. It addresses the problem in existing tiered aquaculture tank structures where the height and position of the upper tank limit the ability of workers to quickly and flexibly access aquatic organisms in all corners of the upper tank. The invention includes a support frame, a movable tank, supporting rails, an easy-access component, and a partition component. The movable tank is located at the top of the support frame. Two supporting rails are fixedly connected to the left and right sides of the support frame. The easy-access component is located at the top of the support frame. The partition component is located inside both the fixed and movable tanks. This invention solves the problem of inconvenient operation of the upper movable tank through the easy-access component, facilitating the retrieval of aquatic organisms and the feeding of materials. Simultaneously, the partition component allows for flexible separation of the internal space of the fixed and movable tanks, meeting diverse aquaculture needs.

This utility model belongs to the technical field of fishing devices, specifically disclosing a fishing device including a lifting net, a biomimetic grass clump, a supporting floating platform, a winch, cables, a fixed anchor, and an operating floating platform. The lifting net consists of an air pipe and a fishing net. Four cables are equidistantly connected to the outer side of the air pipe along its circumference. Four supporting floating platforms are provided, floating around the lifting net. A first pull rope connects the four supporting floating platforms. A triangular support frame is fixedly installed on the top surface of the supporting floating platform. A pulley is rotatably connected to the top of the triangular support frame. One cable is wound around the pulley and connected to the shaft of the winch. The winch is fixed to a boat. The other three cables are wound around the pulley and connected to the fixed anchor. Multiple floats are connected circumferentially to the biomimetic grass clump. A second pull rope connects the operating floating platform to the first pull rope. This utility model has a simple structure, is easy to install, and is convenient and quick to operate. Furthermore, by creating a hiding environment for fish through aquatic plants, it can effectively improve fishing efficiency and catch volume.

The utility model is applicable to the technical field of sewage treatment, and provides a sludge scum collecting device, which comprises a mounting frame, a sludge scum collecting device, a sludge scum collecting device and a sludge scum collecting device, and is characterized in that the mounting frame is used for supporting and mounting each mechanism; the lifting mechanism is mounted at the bottom of the mounting frame, a climbing mechanism is mounted on the lifting mechanism, and the lifting mechanism is used for driving the climbing mechanism to lift up and down; the climbing rails are arranged on the two sides of the climbing mechanism, and the climbing rails are used for assisting the climbing mechanism in sliding and lifting up and down; the collecting box is mounted at the top end of the climbing mechanism, and the collecting box is used for collecting sludge and scum; by arranging the lifting mechanism, the collecting box on the climbing mechanism can be conveniently driven by the lifting mechanism to slide on the climbing rail, by arranging the dumping mechanism, the collecting box can be jacked up and dumped, sludge and scum in the collecting box can be conveniently poured into an external collecting vehicle, the labor intensity of workers is greatly reduced, and the working efficiency is improved. And the sludge and scum cleaning and fishing efficiency in the sewage pool is improved.

The present invention relates to the technical field of aquaculture, and in particular to an aquaculture device, comprising a tank body, a support frame, a universal wheel, a fishing unit and a sewage discharge unit; the fishing unit provided by the present invention rotates right during the upward movement of the baffle net and finally becomes flush with the lower side wall of the fish outlet, so that the fish on the upper end of the baffle net are discharged after passing through the fish outlet and the guide cylinder, thereby completing the fish catching operation, and the catching efficiency is high, and two adjacent pull ropes at the upper end of the baffle net can form a guide groove, so that the fish can slide down from the baffle net and pass through the fish outlet more smoothly without being scratched, thereby ensuring the survival rate of the fish caught from the tank body, and the inclined baffle net can buffer the discharged fish, so that the fish pass through the fish outlet one after another, thereby not causing the fish outlet to be blocked, and in addition, the water in the tank body will not be discharged during the process of catching fish, so that the water in the tank body can continue to be used.

The application discloses a floating fish-light complementary system, which comprises a support unit, a photovoltaic assembly fixed on the support unit, a net cage, a net-retrieving assembly, and a sinker. The net cage comprises a floatable float located at the upper end of the net cage and connected with the support unit, a sinker located at the lower end of the net cage and extending around the central axis of the net cage, and a net cover covering at least the bottom and the side wall of the net cage. The net-retrieving assembly comprises a plurality of second pull ropes distributed along the circumferential direction of the net cage, the second pull ropes being connected with the sinker and a first rope-retrieving device arranged at the upper end of the net cage and capable of pulling the second pull ropes. The application provides a floating fish-light complementary system, which can culture aquatic products in the net cage and catch fish in the net cage, thereby reducing the fishing area and improving the fishing efficiency. Moreover, the net cage is retractable, which further reduces the workload of fishing operation and improves the fishing efficiency.

This application provides a bass fry hatching and rearing pond, belonging to the field of bass farming technology. The bass fry hatching and rearing pond includes a rearing pond and an aggregation component. The aggregation component includes an electric cylinder, a first filter plate, an aggregation frame, and a second filter plate. In use, when bass fry need to be retrieved, the electric cylinder pushes the aggregation frame and the first filter plate upwards. The lower part of the aggregation frame and the first filter plate remain in the water inside the rearing pond. Then, the farmer can move the second filter plate, which moves within the aggregation frame, further compressing the bass fry and gathering them together. This allows for easy retrieval of the fry, saving time and effort and improving efficiency. It is highly practical.