To investigate the metabolic adaptation and lipid utilization to overwintering in Onychostoma macrolepis (27.05 ± 1.79 g), fish were sampled at 0, 75, 150 days, respectively. Fish randomly reared into three outdoor tanks (water temperature range:0–10°C). After overwintering, body weight, viscera index, hepatopancreas intraperitoneal fat index significantly lower than before (p < 0.05). In liver...