An experiment was conducted to evaluate the effect of different strategy of the thyme of phenol on tissue s NPY expression of yellow catfish juvenile. Yellow catfish were chosen with average length 7.8±1.5 cm and average weight 4.45±0.58 g to evaluate the effect of expression in brain tissue under 3 different feeding strategies. The NPY mRNA expression in 4 tissues (brain, liver, spleen, muscle) was determined by RT-PCR and RACE. The results showed that the NPY gene expression in brain was significantly higher than other tissues, and NPY expr...