The coral trout＜i＞Plectropomus leopardus＜/i＞, is an important commercial fish and very much relished sea food in Taiwan. As the supply of wild fingerlings is limited and uncertain, reproduction and stocking of coral trout is more potential. So, this study aims at developing the seed production and the induced spawning of. Once we can conduct the mass seed production, we can reserve the resources and create the cultural industry.