The gut microbiota plays an important role in host health and disease. Our understanding of
the fish microbiota lags far behind our knowledge of that of humans and other mammals.
Nevertheless, research has highlighted the importance of the microbiota in the health,
performance, and various physiological functions of fish. The microbiota has been studied in
various fish species, including model animals, economic fish, and wild fish species. The
composition of the fish microbiota depends on host selection, diet, and environmental …