Fish sedating device

A fish sedating device comprising:

• a fish placement means on which a fish can be placed;
• water present on the fish placement means in a state contacting the fish placed on the fish placement means;
• and
• a pair of electrodes to which electricity is supplied through the water;
• and
• a power source that supplies electricity to the electrode,
• the electrode being formed of a pair of electrodes installed to be spaced apart from each other on the fish placement means, further comprising
• a water storage prevention means for preventing a mucosal membrane of the fish, seawater, or fresh water as resistance-reducing water for reducing an electrical resistance in the water present between the pair of electrodes from being stored, wherein
• the fish placement means is formed of a plate-shaped member that has a flat surface having no protrusion in its outer extension and stores the water on the flat surface,
• the water storage prevention means is formed of at least one of
• a large number of water-passing holes that are provided in a thickness direction of the plate-shaped member in the fish placement means and pass the resistance-reducing water to be stored on the flat surface of the plate-shaped member toward a lower surface of the plate-shaped member, and
• a water-repellent function provided to the flat surface of the plate-shaped member, and
• the water present on the fish placement means is set as high-resistance water having an amount to be brought into a state having a higher electrical resistance than that of the fish by the water storage prevention means.

A fish sedating device comprising:

• a fish placement means on which a fish can be placed;
• water present on the fish placement means in a state contacting the fish placed on the fish placement means;
• and
• a pair of electrodes to which electricity is supplied through the water;
• and
• a power source that supplies electricity to the electrode,
• the electrode being formed of a pair of electrodes installed to be spaced apart from each other on the fish placement means, further comprising
• a water storage prevention means for preventing a mucosal membrane of the fish, seawater, or fresh water as resistance-reducing water for reducing an electrical resistance in the water present between the pair of electrodes from being stored, wherein
• the fish placement means is formed of a plate-shaped portion having a flat surface storing the water on its top, and
• the water present on the fish placement means is set as high-resistance water having an amount to be brought into a state having a higher electrical resistance than that of the fish by the water storage prevention means,
• such that electricity to the pair of electrodes on the flat surface of the plate-shaped member energizes and sedates the fish on the flat surface through the high-resistance water.