The coral trout, Plectropomus leopardus, is an important commercial species and verymuch relished sea food in Taiwan. As the supply of wild fingerlings is limited anduncertain. The growth of the grouper farming industry in the region has been hamperedby the shortage of fingerlings. There is therefore a need to establish breeding techniquefor mass production of coral trout fingerlings. We have to study the development ofembryos, larval rearing, established the broodstock of parent fish, and keep good qualitygenetic strain in a role of aquaculture. For improve the techniques of coral trout cultureand produce mass seed.