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与哺乳类实验动物相比，鱼类实验动物在环境监测、药理实验以及肿瘤学等研究中，独具一些无可取代的特点。目前国外已有近交超过５０代的光亮拟胎（Ｐｏｅｃｉｌｉｏｐｓｉｓ ｌｕｃｉｄａ）和孤独拟胎（Ｐ、ｍｏｎａｃｈａ）等纯合系的鱼类实验动物［１］。剑尾鱼（Ｘｉｐｈ
Compared with mammalian experimental animals, fish experimental animals in the environmental monitoring, pharmacological experiments and oncology and other studies, unique features irreplaceable. At present, there are more than 50 purebred fish experimental animals in the world (Poeciliopsis lucida) and P monacha (10). Swordfish (Xiph