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研究四种不同浓度溶液Ｚｎ￣２＋对金鱼摄食行为、学习和记忆能力的影响，观测了ｚｎ￣２＋抑制鱼摄食行为的现象，实验结果表明：１）Ｚｎ￣２＋中毒鱼首次撞击食球的时间及其变化规律不如正常鱼明显，中毒鱼学习和记忆撞球摄食的能力低于正常；２）中毒鱼的摄食频率低于正常鱼，Ｚｎ￣２＋浓度越高摄食频率下降越明显；３）中毒鱼摄食峰的出现．在时间上迟于正常，Ｚｎ￣２＋浓度越高摄食峰越往后位移；４）１ｍｇ／Ｌ，Ｚｎ￣２＋对鱼类摄食行为影响不大。
The effects of Zn ~ 2+ on feeding behavior, learning and memory ability of goldfish were studied, and the phenomenon of zn ~ 2 + inhibition of fish feeding behavior was observed. The results showed that: 1) the time when Zn ~ 2 + 2) the feeding frequency of poisoning fish is lower than that of normal fish, and the higher the Zn ~ 2 + concentration is, the more obvious the fall of feeding frequency is; 3) The poisoning fish The appearance of feeding peak. In time later than normal, the higher the concentration of Zn ~ 2 + was, the more feeding peak shifted backwards; 4) 1mg / L, Zn ~ 2 + had little effect on the feeding behavior of fish.