Green shrimp is dioecious, both sexes have their own characteristics in appearance, with the naked eye to identify more than 20 millimeters of female and male shrimp is relatively easy, while the shrimp for 10 to 15 millimeters below the shrimp is more difficult to female and male green shrimp in the appearance of the difference (Table 1), there are mainly the following aspects:

Table 1 green shrimp female and male appearance characteristics of the difference

(1) up to sexual maturity In the same age of the shrimp, the male individuals are larger than the female individuals.

(2) The second step foot of males is significantly stronger than that of females. Body length of 3.5 centimeters below the female and male shrimp, the length of the second step foot there is no difference; body length of 3.5 centimeters above the male shrimp, the length of the second step foot has been more than 1.5 times the length of the body, while the female shrimp's second step foot is relatively small, the length of its length does not exceed the length of the body.

(3) female shrimp ventral surface of the fourth and fifth pairs of feet between the base of a wide distance, into the "eight" arrangement; while the male shrimp above the distance between the feet is narrower, the fifth pair of feet on the inner side of each has a small bump, for the opening of the vas deferens.

(4) The inner edge of the inner limb of the second gastropod of the male, with a rod-shaped male appendage, while the female does not have this appendage.

(5) The male genital pore is located on the medial side of the base of the fifth pair of gaiters, whereas in females it is located on the medial side of the base of the third pair of gaiters, and the genital pore is so small that it is not easily visible to the naked eye.