The stomach contents of juvenile and adult Johnieops sina from the inshore fishing grounds off Calicut show no period of active feeding either in the juveniles or in the adults. In the food of juvenile, planfctonic forms dominated; copepods being most predominant. The adult is carnivorous; fishes ranked first in the food followed by prawns, polychaetes, amphipods, squilla sp. and a variety of other organisms living at or near the bottom. The differences in the food composition between juveniles and adults suggest the two different habitats of the fish in the two stages
