The main problem of realizing the optimum structure of fishery production in hilly agriculture area is to adjust the composition of fish species to be stocked and the fully use of the forage resources to improve the productivity of fishes.In Guan Shan Village, after this optimum structure of fishery is adopted the proportion of phytophagous fish in pond has risen from 3.4% to 40%, the. utilization rate of vegetable stuff from 0.8% up to 5.33%. Under the restriction of the overall optimum model of agricultur...