In order to evaluate the diet composition of bartail flathead, sampling was conducted from December 2009 to November 2011. In this study, a total number of 470 fish were measured, out of which 446 pieces were examined. The length-weight ratios were calculated as W=0.000005FL3.07 (n=198, R2= 0.82) for females, W=0.000009FL2.95 (n=248, R2=0.82) for males and W=0.000004FL3.10 (n=470, R2 =0.86) for total fishes. The analysis of FP and IRI results showed that fish (75%) is the main food source for bartail flathead, followed by shrimp (25%) as a secondary food source and crabs and cuttlefish (5%) as accidental food sources. Overall, the analysis of the stomach contents for bartail flathead indicated that this species is a moderate feeder.