GROWTH AND MATURITY OF SALMON IN THE OCEAN 
55 
FISH IN THEIR SIXTH YEAR, OCEAN NUCLEI 
This age group is so poorly represented among the fish taken outside that it is 
impossible to learn anything of the general trend of the growth. The group is by 
no means adequately represented among the fish taken inside, but for the sake of 
completeness the trend has been calculated and is shown in Figure 18. It can not, 
however, be considered as reliable. 
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Fig. 18. — Length of fish in their sixth year, ocean nuclei 
FISH IN THEIR THIRD YEAR, STREAM NUCLEI 
The data for this age group are shown in Figure 19. The trends for the fish 
taken inside and those taken outside run close together and almost parallel — the only 
example among all of the age groups in which this is the case, although it might well 
be expected that this would happen in the majority of instances, were it not for the 
influence of factors other than growth, such as the presence of a succession of various 
races. As shown by these trends, the fish of this age group averaged about 48 cm. in 
