1, the appearance of different: the shape of the pike crab is smaller, weighing between 50 to 100 grams, the shell is light brown or light yellow, the two front legs are short and wide, the back legs are stout; and the shape of the flying crab is relatively large, weighing between 100 to 200 grams, the shell is dark brown or light yellow, the two front legs are long and thin, the back legs are short and stout.

2, different places of origin: pike crabs are mainly produced in the coastal areas of Europe; and flying crabs are mainly produced in the coastal areas of China, Japan, Korea and other Asian countries.

3, different habits: pike crabs mainly live in the shallow sea area of the sandy or muddy seabed, like to live in groups; and flying crabs mainly live in rivers, rivers, lakes, it to algae or plankton for food, to the fall of each year will grow very full.