A complete fish dataset (with more than 150 entries) were fitted to multiple regression equations, with European sea bass, turbot and sole as dummy variables, gilthead sea bream as the reference subgroup category, and diet fatty acid composition and fillet lipid content as independent variables.

Y´_i = β₀ + β₁X_i1 + β₂X^-1_i2 + [β₃X_i3 + β₄X_i4 + β₅X_i5] + [β₈X^-1_i2X_i3 + β₉X^-1_i2X_i4 + β₁₀X^-1_i2X_i5]


Strong correlation coefficients were obtained for saturated fatty acids, monoenes and highly unsaturated fatty acids with a similar strength for each species subgroup.

Response units: mg fatty acid per g lipid; mg fatty acid per fillet ration portion (150 g).