The requirement for dietary lecithin for growth and survival in red sea bream (Pagrus major) larvae was tested using rotifers (Brachionus plicatilis) and Artemia with various levels of lecithin. Four treatments for rotifers and Artemia in the content of their lecithin were prepared by feeding them various oil emulsions respectively. The results indicated that dietary lecithin significantly influence fish lecithin levels and are necessary for good growth and survival in red sea bream larvae. Under the experimental conditions, the optimal values of lecithin level in rotifers and Artemia were shown to be 324.19 mg/100g (wet weight) and 1048.75 mg/100g(wet weight) respectively for the best growth and survival in red sea bream larvae.