In overall 568 unablated Penaeus monodon brood stock were collected from the different region of south east coast of India for the study of maturation, spawning and hatching performances. To stimulate ovarian maturation and spawning of P.monodon through eye stalk ablation and Controlled animal aspects of the atmosphere were taken into attention. The number of eggs depends on the weight of female that varied from 2,72,000 to 4,57,000 having the bodyweight of 100gm to 150gm were the average number of eggs was 4,05,000. The 52.5 % of eggs were fertilized and 85% of them produced nauplii.