Will lead to poor taste. Kill turtle a knife to the head chopped will lead to a large number of instantaneous release of nerve information, at the same time cause large-scale muscle spasms, which will make the turtle blood adenosine triphosphate (ATP) large-scale decomposition, so that the pH value of its muscles plummeted, and ultimately lead to the turtle's muscle texture has become loose, yellow rot, poor taste. Moreover, there exists a substance called creatine in its muscle, which can be hydrolyzed by enzymes to produce a substance called ouabain, and the presence of ouabain will make the muscle of snapper have an odor. In order to avoid the loss of the quality of snapper's meat, the correct way to kill snapper should be to drill a small hole in the head of snapper (basically located in the position of the ear), suck out the snapper's brain, and then cut off the head, which will make the snapper's muscle remain fresh and tasty.