, belonging to the family , are important economic fish species in the Lyusi fishing ground. With the rapid improvement of fishing power and production efficiency, coastal fisheries generally suffer from different degrees of overfishing, and the resources of also suffer from a continuous decline. The purpose of this paper is to provide a reference for the rational development and utilization of resources by analyzing their fatty acid composition, nutritional value, feeding habits, and dietary changes. The fatty acid composition of 46 individuals, collected from the Lyusi fishing ground during autumn 2018, was measured, and a dietary analysis was performed, based on the fatty acid labeling method. The results showed that fatty acid content of (21.77 mg/g); their SFA contents were similar (36.00%); the MUFA content of (15.92%), and the PUFA content of C. lucidus (47.91%). PUFA/SFA and n-3/n-6 of were higher than those found in common aquatic fish. The n-3/n-6 of P