58 
BULLETIN OF THE BUREAU OF FISHERIES 
FISH IN THEIR SIXTH YEAR, STREAM NUCLEI 
No fish of this age group were taken outside of the river, and only 17 inside. 
A text figure, therefore, has not been prepared to show these data, although the 
values of the constants determining the trend have been given in Table 12. That 
the trend would be reversed is indicated by the negative value for h as given in 
// St I I I I I I ■ 
" — Z^G^SA/n • — • 
0^5^50 75 /OO /^5 /JO 
Fig. 21.— Length of fish in their fifth year, stream nuclei 
the table. Although, with so few individuals, such a trend can not be considered 
very reliable, it is worthy of some consideration in view of the fact that, among 
the fish taken inside the river, there were two other age groups, both of which 
were well represented but which showed a similar negative trend. 
Several important facts are shown by these data on the length of the fish. 
