The feeding trial was conducted to compare the effects of Sprinulian platensis and Picochlorum sp. on the survival rate of Litopenaeus vannamei larvae and provide the theoretical basis for shrimp's start-feed. Three experimental groups in triplicate were designed and 20 thousand nauplius in each 300 L tank were fed with commercial Sprinulian(D0), Sprinulian platensis(D1) and Picochlorum sp.(D2), separately, for 7 days. The results showed that the survival rates of D0 and D1 were significantly higher than th...