Second, male: the dragon foot is thick, and there are bright red soft warts on the outside of both ends of the dragon foot. Female: Dragon's feet are relatively small. Most female feet have no red soft wart inside, and even if they have color, they are light.
3. Male: the reproductive hole is opened at the base of the fifth pair of feet, and female: the reproductive hole is opened at the base of the third pair of feet; The abdomen of sexually mature female shrimp is enlarged, while that of male shrimp is relatively narrow.
Extended data:
Lobster has a thick head and chest, a hard shell, bright colors, a short abdomen, a body length of 20 ~ 40 cm and a weight of 0.5 kg, which is the largest type of shrimp. The heaviest can reach more than 5 kilograms, and it is called lobster tiger.
The body is thick and cylindrical, the back and abdomen are slightly flat, the head and breastplate are developed, thick and prickly, there are a pair of powerful supraocular spines in the center of the front edge, and there is a closed gill chamber. The abdomen is short and thick, the rear part curls towards the abdomen, and the tail fan is wide and short. Lobsters have hard segmented exoskeletons.
Thoracic apparatus has five pairs of feet, one or more of which are often deformed into pliers, and the pliers on one side are usually larger than those on the other side. The eyes are located on the movable eye stalk. There are two pairs of long antennae. The abdomen is long, there are many pairs of swimming feet, and the tail is fin-shaped, which is convenient for swimming. The bending of the tail and abdomen can push the body forward. ?
Baidu encyclopedia-lobster