In January/February 1990 the UK and the USSR conducted two research cruises using the vessels RV Hill Cove and RV Akademik Knipovich to study the status of the Champsocephalus gunnari stock in the South Georgia area. In February 1990 the size composition of catches taken by Akademik Knipovich had three peaks corresponding to size groups of 16-18, 24-26 and 30-34 cm. Only vertebra samples (n=140) were used in age determination. Age groups from 1+ to 9+ were present in catches. Two peaks in size composition correspond with fish of the 1987 and 1985/86 year classes. The first small peak corresponds with the strong 1988 year class.