Fish biological morphological characteristic measuring device

The invention discloses a fish biological morphological characteristic measuring device which comprises a flow guide box, a water filtering box is arranged on the flow guide box, the water filtering box is hinged to the right end of the flow guide box, a left vertical plate and a rear vertical plate are arranged on the water filtering box, a horizontal sliding way is arranged on the left vertical plate, a sliding block is embedded in the sliding way, and a front squeezing backup plate is arranged at the right end of the sliding block. The front squeezing backup plate is parallel to the rear vertical plate, the lower end of the front squeezing backup plate abuts against the bottom of the water filtering box, a center rod is arranged between the front squeezing backup plate and the upper end of the rear vertical plate, a CCD camera installation base is arranged on the center rod, and a rear hinge rod and a front hinge rod are hinged between the two ends of the center rod and the front squeezing backup plate and