Juvenile Lumpenus maculatus have a special oil sac composed of large polygonal units situated on the ventral part of the fish from the pectoral fins to the anus. The sac consists of pure triacylglycerols, whose major fatty acids are 20:1 (n-9) and 22:1 (n-11). The fish flesh is also rich in lipid (c. 40 % of dry weight), of which 50 % are triacylglycerols and 35 % wax esters. Both the fatty alcohols and fatty acids are dominated by 20:1 (n-9) and 22:1 (n-11) moities. The results are discussed in relation to current knowledge of the role of lipids in marine pelagic animals at high latitudes.
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Falk‐Petersen et al. (1986) studied this question.
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