Puntius species are common fish available in the wetland of Begusarai. In the present study Puntius sarana has been selected for the study of morpho-histology of alimentary canal in relation to feeding behaviour. The study will be helpful for the culture and farming of Puntius species. The alimentary canal of the fish having buccal cavity, oesophagus, Intestinal bulb, Intestine and rectum. The result on gut content analysis of Puntius sarana suggests that the fish feeds on molluscs, crustaceans, algae, detritus, insect larvae, mosquito & their larvae, macrophytes and fish. On the basis of different food items present in the stomach contents, Puntius sarana may therefore be conveniently regarded as an omnivorous fish. The preference on molluscs, crustaceans and insect matter in P. sarana indicates their ability to feed throughout the water column and presence of a high percentage of detritus in the gut indicates that the fish feeds in bottom.