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Summary
The methods of collecting data and subsequent computer analysis are described. The characteristic length-weight values (b) of sole populations have been used to illustrate differences between the sexes, seasons and geographical localities. Males and females are similar in length-weight characteristics. However the mean length and weight of males is significantly less than females. Soles are heavier at the same length in summer than in winter. Sole populations are significantly different between trawling grounds. There is a difference in length-weight relationship (b) between the four grounds with the highest b value found on the Mud Hole ground in the east. The mean lengths and weights of catches are significantly different between the grounds, with the lowest values found in the east. Possible causes are briefly considered.