Diseases of farmed fish: non-salmonids including eels and crustacea.

All cultured fish are subject to very similar parasitic and bacterial conditions. These disease outbreaks are often stress mediated due to adverse environmental factors. The non-salmonid fishes are affected by a number of specific viral diseases which may vary from mild skin infections to systemic conditions resulting in high mortality. Nutritional diseases may be associated with dietary deficiencies or inclusion of toxic products in artificial feeds.