Aquaculture in brackish and marine water is growing worldwide (FAO, 2014), including new cultured species. Various Vibrio infections occur, and cause significant problems, in fish, crustacean and shellfish (Austin & Austin, 2007. Vibrio anguillarum, V. salmonicida, V. ordalii and V. vulnificus are among the pathogens that lead to the biggest losses in aquaculture all over the world (Toranzo et al. 2005, Sandlund et al., 2010; Sitjà-Bobadilla et al. 2014).