锚头鳋属于寄生桡足类,对鱼类危害很大。常见的锚头鳋有多态锚头鳋、鲤鱼锚头鳋、草鱼锚头鳋和四球锚头鳋四种。锚头鳋在当年幼鱼或成鱼体上都能寄生,它是从头部钻入寄主的肌肉或鳞片下,胸腹则裸露于寄主体外,在锚头鳋寄生的部位,肉眼可见针状的病原体。如果锚头鳋在鱼体长时间寄生后,虫体表面常有原生动物及藻类附生,肉眼观察好像一束灰色的棉絮。被锚头鳋寄生的鱼,发病初期表现为急躁不安,食欲减退,继而逐渐消瘦,游动迟缓,直至死亡。鱼体上被多态锚头鳋寄生的部位,其周围组织发炎、红肿,有因溢血而出现的红斑;被草鱼锚头鳋和鲤鱼锚头鳋寄生的 Anchorage 鳋 belongs to the parasitic copepods, a great harm to fish. Common anchor 鳋 have polymorphic anchor 鳋, carp anchor 鳋, grass carp anchor 鳋 and four ball anchor 鳋 four. Anchovy 鳋 in the year fish or adult fish can parasitic, it is drilled into the host’s muscles or scales from the head, chest and abdomen are exposed outside the host, in the anchor head 鳋 parasitic parts, visible pin Like pathogen. If the anchovy 鳋 long parasitism in the fish body, the surface of parasites often protozoa and algae epiphytes, the naked eye looks like a bunch of gray cotton. Anchovy 鳋 parasitic fish, early onset manifested as irritable, loss of appetite, then gradually weight loss, slow swimming, until death. Fish body was polymorphic anchor 鳋 parasitic sites, the surrounding tissue inflammation, swelling, there due to hemorrhage and erythema; grass carp anchor 鳋 and carp anchor 鳋 parasitic