A system for maintaining the health of captive fish in a mobile environment, comprising a live well for containing fish in a fluid medium, a plurality of thermoelectric coolers affixed to the live well, and a live well controller for controlling a direct current applied to the thermoelectric coolers, and a method for maintaining a consistent temperature comprising the steps of setting an initial temperature, applying a current to thermoelectric coolers, reading a new temperature, and adjusting the current based at least in part on the new temperature reading.

A system for maintaining the health of captive fish in a mobile environment, comprising a live well for containing fish in a fluid medium, a plurality of thermoelectric coolers affixed to the live well, and a live well controller for controlling a direct current applied to the thermoelectric coolers, and a method for maintaining a consistent temperature comprising the steps of setting an initial temperature, applying a current to thermoelectric coolers, reading a new temperature, and adjusting the current based at least in part on the new temperature reading.

A livewell system for installation on a marine vessel includes a tank configured to hold water, a lid configured to be secured over an opening at an upper end of the tank, and an overflow outlet located proximate the upper end of the tank. When the lid is secured over the opening and the tank is filled with water, an underside of the lid is configured to contact substantially an entire upper surface of the water such that substantially no air gap is present between the upper surface of the water and the lower surface of the lid. A hybrid aerator spray head and venturi fitting coupled to the tank provides oxygenated water into the tank.

A livewell system for installation on a marine vessel includes a tank configured to hold water, a lid configured to be secured over an opening at an upper end of the tank, and an overflow outlet located proximate the upper end of the tank. When the lid is secured over the opening and the tank is filled with water, an underside of the lid is configured to contact substantially an entire upper surface of the water such that substantially no air gap is present between the upper surface of the water and the lower surface of the lid. A hybrid aerator spray head and venturi fitting coupled to the tank provides oxygenated water into the tank.

Methods, systems, and apparatus, including computer programs encoded on computer storage media for identification and re-identification of fish. In some implementations, first media representative of aquatic cargo is received. Second media based on the first media is generated, wherein a resolution of the second media is higher than a resolution of the first media. A cropped representation of the second media is generated. The cropped representation is provided to the machine learning model. In response to providing the cropped representation to the machine learning model, an embedding representing the cropped representation is generated using the machine learning model. The embedding is mapped to a high dimensional space. Data identifying the aquatic cargo is provided to a database, wherein the data identifying the aquatic cargo comprises an identifier of the aquatic cargo, the embedding, and a mapped region of the high dimensional space.

Methods, systems, and apparatus, including computer programs encoded on computer storage media for identification and re-identification of fish. In some implementations, first media representative of aquatic cargo is received. Second media based on the first media is generated, wherein a resolution of the second media is higher than a resolution of the first media. A cropped representation of the second media is generated. The cropped representation is provided to the machine learning model. In response to providing the cropped representation to the machine learning model, an embedding representing the cropped representation is generated using the machine learning model. The embedding is mapped to a high dimensional space. Data identifying the aquatic cargo is provided to a database, wherein the data identifying the aquatic cargo comprises an identifier of the aquatic cargo, the embedding, and a mapped region of the high dimensional space.

[Problem] Under an underwater environment containing a high concentration of carbon dioxide having an anesthetic effect, prolonged anesthesia is performed on fish and shellfish in a safe and practically simple manner.

[Solution Means] Fine bubbles containing gaseous oxygen are brought into contact with the surface of a gill epithelial cell membrane of fish and shellfish to produce a partial pressure difference between [gaseous oxygen partial pressure][gill capillary dissolved oxygen partial pressure] exceeding a partial pressure difference between [water dissolved oxygen partial pressure][gill capillary dissolved oxygen partial pressure], and thus the amount of oxygen taken by a gill thin plate capillary is remarkably increased. Thereby, respiratory failure which is caused under a spontaneous respiratory movement suppressed by anesthesia is avoided, and thus it is possible to perform prolonged carbon dioxide anesthesia under a water temperature (around 20 C.) at which normal fish and shellfish are treated.

[Problem] Under an underwater environment containing a high concentration of carbon dioxide having an anesthetic effect, prolonged anesthesia is performed on fish and shellfish in a safe and practically simple manner.

[Solution Means] Fine bubbles containing gaseous oxygen are brought into contact with the surface of a gill epithelial cell membrane of fish and shellfish to produce a partial pressure difference between [gaseous oxygen partial pressure][gill capillary dissolved oxygen partial pressure] exceeding a partial pressure difference between [water dissolved oxygen partial pressure][gill capillary dissolved oxygen partial pressure], and thus the amount of oxygen taken by a gill thin plate capillary is remarkably increased. Thereby, respiratory failure which is caused under a spontaneous respiratory movement suppressed by anesthesia is avoided, and thus it is possible to perform prolonged carbon dioxide anesthesia under a water temperature (around 20 C.) at which normal fish and shellfish are treated.

A fish display apparatus continuously circulating water through a plurality of removable live fish containers, whereby a large number of individual containers containing one or more fish may be easily displayed to customers and whereby any single container may be removed by the customer for purchase of the fish contained therein without stopping or interfering with the flow of water passing through the remaining containers.

A fish display apparatus continuously circulating water through a plurality of removable live fish containers, whereby a large number of individual containers containing one or more fish may be easily displayed to customers and whereby any single container may be removed by the customer for purchase of the fish contained therein without stopping or interfering with the flow of water passing through the remaining containers.