Shannon, and range-weighted
richness indices. The observed alterations demonstrate that fish fed experimental diets had different
signs of gut oedema and inflammation that could compromise their body homeostasis, which is mainly
maintained by the epithelial lining of the gastrointestinal tract. To our knowledge, this is the first in vivo
study regarding the implications of the use of synbiotics (conjunction of probiotics and prebiotics) on fish
gut morphology and microbiota.