2, Tianjin purple crab. This is a kind of Chinese velvet crab, it is small, only a coat button size. Uncover the crab, the crab yolk was pig liver purple, cooked into orange-red, taste extremely fresh. Purple crabs are produced in the cold and windy winter, so they are often used in shish-kebab hot pots.
3, red crab. Red crab, also known as + word crab, the head of the thoracic armor is about 1.6 times as wide as long, smooth surface. Frontal with 6 teeth, the central 4 teeth of similar size, the outer teeth narrow and sharp. Anterolateral margin with 6 teeth, the first two teeth flat and blunt, the middle of the anterior margin concave, the last tooth smaller than the other teeth, but more pointed and protruding. Chelicerae rather stout, zygomorphic. Metacarpal segment dorsally with 4 spines. Medial margin of long segment with 3 sharp spines. Cephalothorax reddish brown with yellow stripes, and anteriorly in the middle with -yellow + crosses. Chelicerae red and covered with yellow markings, anterior end of nictitating finger dark brown.
4. Bread crab. Also known as trowel crab, free trowel crab, etc., cephalothoracic armor dorsal very bulging, the surface with five longitudinal wart-like protuberances, lateral with soft hairs. Frontal narrow, anterior margin concave, divided into 2 teeth. Eye sockets small. Anterior lateral margin with granular teeth. Posterior lateral margin with 3 teeth. Posterior margin with 1 crenate tooth in middle and 4 triangular acute teeth on each side. Chelicerae asymmetrically shaped, with the right phalanges more robust and the chelicerae contracted against the forehead.
5, saffron crab. Safflower crab scientific name rusty spot hairy crab, commonly known as patterned stone crab, flower crab, fire male, cross crab, Miles crab. Saffron crab is not only patterned flower, the bottom color are light small pink, because the pattern pattern on the upper side of the brain is like carrying a cross, also named cross crab.