Atypical Aeromonas salmonicida stra

Atypical Aeromonas salmonicida strains have been isolated from a wide range of fish species belonging to different families and orders (Table 3). More than 20 farmed and 30 wild fish species have been reported to harbor atypical A salmonicida strains. Initially, atypical A. salmonicida strains were predominantly recovered from fresh water or anadromous fish species. However, more recently atypical strains have repeatedly been isolated from marine fish species, like flatfish (order Pleuronectiformes) and codfish (order Gad- iformes), as well as catadromous fish species, like eels (family Anguillidae) (Table 3).