海豚链球菌,属于链球菌科的链球菌属,呈圆形或卵圆形,成对或呈不同长度的链状,无鞭毛,不运动,有荚膜,不形成芽孢,革兰氏染色阳性,是一种条件性人畜共患病病原菌,它能感染几乎所有的海、淡水鱼类,还可感染人类,引起局部蜂窝组织炎,心内膜炎。海豚链球菌病是感染性极强的细菌性疾病,目前已成为热带鱼类主要致病菌之一。此病也可以导致鱼慢性持续性死亡,最终造成重大的经济损失。该 Streptococcus dolphin, Streptococcus belongs to the genus Streptococcus, was round or oval, in pairs or in different lengths of the chain, no flagella, no movement, a capsule, does not form spores, positive Gram staining , Is a conditional zoonotic pathogen that infects almost all sea and freshwater fish and can infect humans, causing localized cellulitis and endocarditis. Dolphin streptococcal disease is a highly infectious bacterial disease, has become one of the major pathogens of tropical fish. The disease can also lead to chronic, chronic fish deaths, which can result in significant financial losses. This