The effect of the anesthetic MS-222 on the activities of alkaline phosphatase(AKP),catalase(CAT)and acid phosphatase(ACP)in goldfish was analyzed under laboratory conditions.Four concentrations 0 mg/L,30 mg/L,60 mg/L and 90 mg/L of MS-222 were tested.The results showed that the concentration of MS-222 affected the activities of AKP,CAT and ACP in the gill,liver and muscle of goldfish.The results show that the activity of alkaline phosphatase is first increased and then decreased,shows a parabola curve which...