Undersea fish school detection device

The invention relates to the technical field of underwater monitoring devices, in particular to an undersea fish school detection device, a feeding mechanism is provided with a stimulation mechanism, the feeding mechanism has the function of attracting a fish school through periodic rotation of the stimulation mechanism, and the stimulation mechanism regularly recycles materials through fixed-angle rotation of the feeding mechanism. A control rod is installed on the feeding mechanism, a protruding block used for controlling the feeding mechanism to release materials is arranged on the control rod, the control rod controls the mass of the fed materials along with periodic rotation of the feeding mechanism, a rotating blade is installed on one side of the stimulation mechanism, and the rotating blade and the stimulation mechanism move synchronously. A detection sample is provided for the camera by stimulating a fish school; the problem of how to detect the fish school health condition in the early stage of mari