A rainbow of dishes may satiate your taste buds but they may lower the diversity of bacteria in your gut - making your body vulnerable to a plethora of diseases. Researchers have discovered that the more diverse the diet of a fish the less diverse are the microbes living in its gut. Fish that are picky eaters - focusing on just one type of food such as small crustaceans or chironomid insect larvae - have more diverse microbial communities in their intestines the findings showed. In contrast fish eating a more diverse mixture of foods have less diverse microbes in