Device for rapidly marking schizothorax fish specimen in field investigation process

The invention relates to a device for rapidly marking a schizothorax fish specimen in a field investigation process, which comprises a vertical rod, wherein two insertion hole, which are distributed up and down, are formed in the side surface of the vertical rod; insertion rods are respectively arranged in the insertion holes; the inner periphery of the insertion rods are respectively in sliding contact with the outer periphery of corresponding insertion holes; the left ends of the insertion rods are fixedly connected with a same holding rod; the outer periphery of the insertion rods are respectively sleeved with springs; the springs are positioned between the holding rod and the vertical rod; the right ends of the insertion rods are fixedly connected through a connecting rod; and the middle part on the right side of the connecting rod is fixedly connected with the left side of a transverse plate; a vertical pipe is arranged below the transverse plate; the top side of the vertical pipeis fixedly connected wit