Feeding trial duration was limited to 6weeks as fish in all the treatments achieved greater than 500% growth in 42d. There was 100% survival in all the treatments. Initial mean individual weight, final mean individual weight, final mean individual weight gain, and total feed consumption were not different among the diet treatments (Table 3). Feed conversion was superior in fish fed the diet with 4% supplemental lecithin (Diet 3) compared with those fed the diet with 0% lecithin (Diet 1), while feed conversion in fish fed the diet with 2% supplemental lecithin (Diet 2) was intermediate and not different from other diets (Table 3).