目前,世界许多国家的鱼类培养技术和活饵料生物的大量生产方法已有显著进展。但是,对在仔、幼鱼培养中所使用的饵料生物的营养学进行的基础研究却不多。日本在仔鱼生产中所使用的饵料生物见下图。在体长大于2.3毫米时,使用轮虫作为初期饵料(在仔鱼孵出的30天内一直使用)。当仔鱼体长达7毫米以上时,用海洋桡足类如:虎斑猛水蚤、纺锤水蚤、长腹剑水蚤、拟哲水蚤与轮虫混合投喂。若以上这些桡足类不足时,也可用淡水产的裸腹水蚤和红虫代替与轮虫一同投喂。也常使用丰年虫作为海产仔鱼的饵料。当仔鱼大于10～11毫米 At present, there have been significant advances in fish culture techniques and mass production methods of live food organisms in many countries of the world. However, there are not many basic studies on the nutrition of bait organisms used in young and young fish culture. The food organisms used in Japan in larval production are shown below. When body length is> 2.3 mm, rotifers are used as the initial feed (which is used until the larvae hatch for 30 days). When the larvae body length of up to 7 mm above, with marine copepods such as: tiger fierce Daphnia, Spindle Daphnia, long belly sword daphnia, mullet and flea mixed feeding. If these copepods are not enough, but also with the freshwater aquatic asparagus and red worms can be replaced with rotifer feeding. Artemia are also commonly used as bait for marine larvae. When the larva is more than 10 ~ 11 mm