vibriosis caused by Vibrio anguillarum Aetiological agent Vibrio anguillarum Epidemiology Hosts: European seabass (Dicentrarchus labrax), gilthead seabream (Sparus aurata), sole (Solea spp.), sea mullet (Mugil spp), turbot (Scopthalmus maximus) and eel (Anguilla anguilla). Morbidity and mortality rates: Varying depending on age/size, and co-infections; in seabass mortality in the grow-out phase can reach 30% but may increase. Transmission: Horizontal. Factors (environmental, others) for disease outbreak: Occurs at seawater temperatures between 13-21oC, but mainly after a sudden increase in temperature in spring or decrease in autumn. In winter months disease is more often in chronic form. The disease may follow stressful conditions.