particularly for the FS10 diets at 30 days (2.68 ` 0.30 g kg1), the FS30 diets at 60 days (6.12 ` 0.66 g kg1) and the FS20 diets at 90 days (6.88 ` 0.30 g kg1). No significant difference was found in the lutein deposition of the fish fed different diets after 30 days (Fig. 2b). Highly significant differences (P 0.05) in lutein after 60 and 90 days were found in the SP diet group, with average values of 1.85 and 0.89 lg kg1 respectively.