This study was conducted to investigate the effects of three different feeds on eel flesh quality during fattening period. Two hundred eighty five eel with mean body weight of 123 g were raised in indoor concrete tanks for 2 months. The growth, feed conversion ratio and body indices were insignificantly affected by feeds. The results of Chroma meter analysis showed that the color of skin and meat was more reddish in the eel fed with commercial floating pellets, while the color could be improved through feeding with the FRI self-produced floating pellets after 2-month rearing period. The anti-oxidation status of muscle was more effective in the eel fed with the FRI self-produced pellets or commercial powder feed. The results of sensory evaluation indicated that the flesh quality of eel fed with commercial floating pellets was inferior to that of fish fed with the FRI self-produced pellets or commercial powder feed, in spite of roasted or seasoned way. The proximate composition of eel fillet was not affected significantly by feed type. However, fatty acid composition of the fillet was remarkably affected to a certain extension by dietary fatty acid composition. The concentrations of flavor amino acids and carnosine in the muscle of the FRI pellets fed eel was significantly higher than that of the fish fed with commercial floating pellets. The results of this study suggested that the flesh quality can be improved via modifying the formulation of extruded pellets within 2-month fattening period.