据调查,舟山地区网箱养殖大黄鱼主要病害是烂尾病(即细菌性体表溃疡病),本文对大黄鱼烂尾病的发病原因进行分析,并提出防治对策。一、网箱养殖大黄鱼烂尾病的发病原因1.症状:病鱼体表、尾柄和上下吻部充血发红,逐步发展成皮肤腐烂,鳞片脱落,尾、胸腹鳍基部充血,肛门红肿,体表常 According to the survey, the main disease of cage culture of yellow croaker in Zhoushan area is the rotten-tail disease (that is, the bacterial surface ulcer disease). In this paper, the pathogenesis of rotten-tail disease of big yellow croaker is analyzed and the control measures are put forward. First, the reasons for the pathogenesis of large yellow croaker fish breeding cages 1. Symptoms: fish body surface, caudal peduncle and upper and lower kiss congestion congestion and redness, and gradually developed into skin decay, scales off, tail, chest and abdomen fin base congestion, anal swelling , Body surface often