The Goby Gobius vittatus is a carnivore and generalist which feeds on a wide variety of prey items, particularly on polychaetes, gastropods, copepods, ostracods and bivalves. The intensity of feeding was lowest in autumn and the diet spectrum was broadest in summer. There were high seasonal differences in biomass and number of almost all major prey items. Smaller specimens fed mostly on meiofauna, and large fish preferred macrofauna. The breadth of diet increased with fish size.