一般金鱼常发生的寄生虫多留以下三种寄生虫引起:一是鱼虱,身体扁圆,色呈灰绿,略透明,大者形状似小臭虫;二是三代虫,虫体扁平,形如纺锤体,用眼仔细观察可见虫体;三是锚头蚤,身体似针,头部有复角和两个圆形吸盘,常附着在鱼体上吸血,在病鱼体表肉眼可见虫体,发现时可用镊子捉除。以上几种寄生虫侵害金鱼后,鱼体有时会失去平衡,常出现烦躁不安,时而急游,时而用身子擦池壁,继则引起食欲不振,行动迟缓,局部红肿溢血溃疡,分泌物增多,严重时,鳞片脱落,水霉等菌乘虚而入,并发感染,引起鱼体消瘦死亡。 Common goldfish parasites often occur in the following three parasites caused: First, louse, body oblate, gray-green, slightly transparent, the larger the shape of small bugs; second three generations of worms, worms flat, shaped like Spindle, carefully observed with the eyes can be seen parasites; third anchor head flea, body-like needle, the head has a complex angle and two circular sucker, often attached to the fish on the vampire, diseased fish body surface visible parasites , Found tweezers can be caught. After several species of goldfish infestation of the above parasites, the fish sometimes lose their balance, often irritable, sometimes travel, sometimes with the body wipe the wall, then cause loss of appetite, slowness, local redness hemorrhage ulcers, increased secretions, In severe cases, the scales fall off, watery mildew and other bacteria take advantage of, complicated by infection, causing the fish to lose weight.