Lipid retention was highest in fish fed the FM20 diet and the lowest in the FM75 diet
treatment. Fillet fatty acid profile reflected dietary composition and was altered by the level of FM replacement.
Lower n−3 and long-chain polyunsaturated fatty acid (LC-PUFA) levels, higher n−6 fatty acid levels, and reduced
n−3:n−6 ratios were associated with increasing FM replacement. Incorporation of the S. limacinum
meal partially attenuated dietary and tissue loss ofDHA, however, EPA levels declinedwith increasing FMsparing.