During that period the nutritional composition of the rotifers didn't change in lipid content or lipid composition. Also the protein content remained stable at 61 –62%. The amino acid pro file pattern of the rotifers was very similar among the rotifers(Table1 ) and followed the composition of the diet. In generalit was highest in Ori-One followed by Ori-Culture and Ori-Green. Taurine concentration was significantly higher (100% increase) in the stand-alone diet compared to the traditional culture and enrichment diets (Table 1).