Isozymes in different tissues of three stains of crucian carp were studied comparatively . the results indicated that pengze crucian carp is different from silver crucian carp in biochemical level , they probably came from different region . the electrophoretogram of pengze crucian carp and silver crucian carp all included the basal patterns of wild crucian carp 通过对三种鲫鱼品系不同组织同工酶的电泳图谱的比较研究，揭示了彭泽鲫和银鲫至少在生化水平上已有明显的分化，很可能起源于不同的地区，独立演化而形成。
Est isozyme patterns between pengze crucian carp and wild crucian carp is similar especially among the patterns of several isozyme . it is speculated that pengze crucian carp and silver crucian carp were all origined from wild crucian carp . the relations between pengze crucian carp and wild crucian carp is closer than that of silver crucian carp and wild crucian carp 彭泽鲫和银鲫d系的同工酶电泳图谱都包括有野鲫的基本酶带，而彭泽鲫和野鲫的酯酶同工酶电泳图谱尤为相似，推测彭泽鲫和银鲫都起源于野鲫，彭泽鲫和野鲫的亲缘关系较近，而银鲫和野鲫的亲缘关系较远。
