The syndrome displayed as protrudent eyes, lackluster surface with white cytocysts, ulcerative gill, swoln throat, anabrotic liver and inflammatory intestinal tract.

解剖观察有烂鳃，咽腔部肿胀，肝胰腺呈糜散状，腹腔有积液，肠道中无食物并伴有炎症等病症。