用显微镜或解剖镜等光学仪器检查病鱼，称为镜检。镜检是在目检的基础上进行更进一步的工作。镜检的取材方法和步骤与目检差不多，即先外部后内部。１镜检的方法１．１载玻片法主要检查原生动物如车轮虫、鳃隐鞭虫、多子小瓜虫等，以及细菌和真菌病原体。剪取一小块鱼的组织或 Check the diseased fish with a microscope or a dissecting microscope and other optical instruments, called microscopic examination. Microscopic examination is carried out on the basis of visual inspection for further work. Microscopic examination methods and procedures and visual inspection is almost the same, that is, after the first external external. A microscopic examination method 1.1 Slides method mainly checks protozoa such as car rostral, gills whip whip, many small cantaloupe and so on, as well as bacterial and fungal pathogens. Cut a small piece of fish or tissue