每年的6～8月份,由于气温高,投饵量大,加之水温高,水质差,是鱼病高发季节。根据这一鱼病易发生特点,尽量在鱼病高发期前用药,可起到事半功倍的预防效果。按照一般规律,6月10日之前,也就是养殖前期,鱼一般很少发病;6月10日至8月20日是鱼病高发期;8月20日以后, 6 ~ August each year, due to high temperature, feeding a large amount, combined with high water temperature, poor water quality is the season of high incidence of fish diseases. According to the characteristics of this fish disease prone, try to use drugs before the high incidence of fish disease, can play a multiplier effect of prevention. In accordance with the general law, before June 10, that is, pre-aquaculture, fish rarely seldom; June 10 to August 20 is the high incidence of fish disease; August 20,