METHOD FOR FISHING SAURY WITHOUT NETS Russian patent published in 2017 - IPC A01K79/02 

FIELD: agriculture.

SUBSTANCE: method involves attracting saury by a bait, concentrating by the field of electric current and pouring out the concentrated fish with a fish pump. The illumination of the water surface by light sources fixed along the vessel board is used as the bait. At the attracting stage, lamps of blue-green and white colour, installed at an angle of 45° to the water surface, create the illumination of not more than 700 lux. At the concentration stage, the light sources are equipped with alternating blue-green and red lamps with separate switching of each colour, which create the illumination of not more than 200 lux. The electric current field is formed by three electrodes - two cathodes and an anode fixed above the branch pipe of the fish pump and separated from the cathodes by a distance of no more than 3 m. The potential difference of the electrodes for creating galvanotaxis and galvanonarcosis is maintained as 1-2 V and 2.5-3 V, respectively.

EFFECT: invention allows to increase the efficiency of fishing.

2 dwg