Jiaozhou Bay is an important spawning and feeding ground for many commercially important species. However, intensive fishing has had significant effects on its fishery resources. The marine species living in this bay have decreased sharply over several decades. Despite the importance and drastic changes in this bay, little information is available about the feeding habits of most fish species inhabiting this area. Stable isotope analysis has become a powerful tool for studying the feeding habits of fishes. The stable carbon isotope composition of consumers shows the derivation of food, while the nitrogen isotope composition indicates the trophic level in the food web. The method can overcome some of the limitations associated with traditional stomach contents analysis. In this study, carbon and nitrogen stable isotope analyses were employed to explore the feeding habits of in Jiaozhou Bay based on samples collected from a bottom trawl survey in May 2011. ranged from10.14‰ to 15.50‰ (12.83‰±1.10‰), and from−21.52‰ to −18.14‰ (−20.42‰±0.73‰), respectively. The main food sources ofTrachypenaeus curvirostris, L. planirostrand zooplankton were the most important prey items for , accounting for 47%−66% and 35%−40% of food composition, respectively. A Pearson correlation test indicated that there was significant positive relationship between the standard length of <0.05), while no significant correlation was found between standard length and in different size classes being 3.65±0.14. The trophic levels did not increase with the size classes. Compared with previous studies, the food composition and trophic levels of had experienced great changes, and the fluctuation of prey sources and the difference in analysis methods might be the main reason. Furthermore, the variations in trophic levels were also related to the difference in isotope baseline, isotope enrichment, sample size, and standard length of