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Lipid composition of New Zealand eels.

The lipid content and fatty acid composition of New Zealand eel species Anguilla australis (short-fin) and Anguilla dieffenbachii (long-fin) in both the feeding and the migratory phases were studied. Migratory short-finned eels were found to have a higher lipid content than feeding eels. Among feeding eels the lipid content was higher in larger eels. The lipids of migratory eels were more saturated than those of feeding eels due to higher proportions of C18 acids and correspondingly lower proportions of C20 and C22 polyunsaturates. Among feeding eels, the lipids of the long-finned species were more highly unsaturated than those of short-finned eels.