1.Sturgeon, or call stone old ghost, head cuirass is hexagonal, chela is sufficient powerful, sufficient edge back an abdomen provides bristle, congeneric kind more, or viridescence color, or He Gong is lubricious.
2.Green crab, also say to curium predestined relationship green crab, head cuirass is short and wider, two side do not have long thorn, nearly elliptic, viridescence is lubricious, big individual have 10 centimeters long normally, 14 centimeters wide.
