Milkfish is one of the most important cultured fishin Taiwan. Both the traditional and modern improved methodsof culture request a large number of fry for pond stocking.Besides gathering from coastal areas in Taiwan, fingerlingsand juvenile fish are imported from the Philippines and/orIndonesia to meet the demand. The fluctuating supply of frycauses uncertainty in the milkfish industry. Hence, a morereliable source of fry is urgently needed to be developed.