Spawning occured about 12 hrs. and 5 hrs. after the injection of Gonahormone 10 IU/g body weight, at water temperature 20℃, 25℃ and 30℃,. The eggs will begin hatching about 55-60 hrs. 25 hrs. and 20 hrs. after putting them into the water temperature 20℃, 25℃, and 30℃.