Annual by cold lake of A of city of road of Hokkaido bracelet of Japan of Xia Qiuzhi border, metropolis somebody comes round capture a kind of Chinese's very familiar aquatic product: Crayfish. But place captures crayfish is not to be tasted delicate, however the dilate that rigor controls this kind of ab extra species, prevent to destroy lake water modes of life and relation to their environment. Every time next basket, can capture very quickly a few kilograms crayfish. Crayfish besides should breed in China ability eats quite artificially, be in other area is to be decided to be ab extra inbreak species, progenitive splitting, the model that the species that became local area endangers is represented, the warning that the crayfish of ab extra species that the graph establishs for A Han lakefront prohibits putting in indicates. In the crayfish that A cold lake captures, having one share is to send in the big city such as Tokyo to regard as feed capable person. But this share amount is very few, 4% what trafficced the income of crayfish to also hold piscatorial gross earnings only, everybody does not have too large interest to selling crayfish. Some how does redundant crayfish do? That is forced on the spot " humane destruction " , the fisherman is direct tread down, regard as fertilizer. Drive out the job of crayfish is undertaking all the time, also obtained certain result, captured 2010 eliminated 100 thousand or so, arrived the amount decreased 2016 for 30 thousand 1000 6. Look at them to treat crayfish as fertilizer, chinese crayfish takes money people, had felt for certain regrettablly! Still come a dish of crayfish presses help sb get over a shock.