The diet composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) around South Georgia in January/February 1991 were analysed in 3 877 stomachs collected at 44 stations. Both the proportion of krill (Euphausia superba) in the stomachs and the feeding intensity were uncommonly low in a period when energy rich food is needed for the final maturation of the gonads.