蟹栖拟阿脑虫(Paranophrys carcini Groliere&Leglise),在生产中俗称纤毛虫,属纤毛动物门,寡膜纲,盾纤毛目,嗜污科。虫体呈葵花籽形,前端尖,后端圆,大小为28．1-62μm×9．2-21μm,胞口位于前端腹面,有3片口膜。体表有11条纵纤毛线。体后端正中有1条长尾毛,体内中部稍后有1个伸缩泡和大小核各1个。该虫由二分裂繁殖,生活水温0-25℃,适宜盐 Parasites (Paranophrys carcini Groliere & Leglise), commonly known in the production of ciliates, is a ciliate animal, oligo-membrane gang, shield cilia head, Eczema Division. The worm body was sunflower-shaped, the tip of the tip, the back of the round, the size of 28.1-62μm × 9.2-21μm, the front of the cell ventral ventral, there are three oral membranes. Surface has 11 longitudinal fibers. There is a long tail hair in the middle of the back of the body, the middle of the body later there is a telescopic bubble and the size of the nuclear one. The insects by the two split propagation, living water temperature 0-25 ℃, suitable salt