Priacanthus hamrur (Forsskal), a column feeder, feeds almost exclusively on crustaceans as revealed by qualitative and quantitative analyses of gut contents. The study conducted on the basis of sex, size and season showed that the food spectrum is limited to eight items. Prawns and prawn tissues formed more than 60% of the total food. Length groups and sex groups have real influence on the feeding nature and preference of food. Feeding intensity was found to vary in two sexes. Increased feeding intensity was noted in mature fishes. Monthly G.S.I. was studied. Feeding rhythm showed no day night specificity.