52 
BULLETIN OF THE BUREAU OF FISHERIES 
taken inside — differ materially, although in quite another manner than was noted in 
the fish with ocean nuclei in their second year. In the 3-year-old fish, the trend for 
the iadividuals taken inside is much steeper than that for those taken outside, indi- 
cating a more rapid increase in size during the season. The trend for the fish taken 
outside starts at about 60 cm. on the 1st of May and is increased to a little over 72 
cm. by the 8th of August. As in the case of the 2-year-old fish, the variation about 
Fig. 15.— Length of fish in third year, ocean nuclei Fig. 16.— Length of fish in fourth year, ocean nuclei 
the trend of the points indicating the average size found in the various collections is 
less in the case of the fish taken in the ocean than among the fish taken in the river. 
FISH IN THEIR FOURTH YEAR, OCEAN NUCLEI 
The data and the trends for the fish of this age group are shown in Figure 16. 
The trend for the fish taken outside starts at 77.7 cm. and increases to 91.7 cm. by the 
8th of August. The corresponding trend for the fish taken inside is much less steep, 
starting at 79.1 cm. and reaching a value of only 86.8 by the same date. As in the 
two age groups previously discussed, the deviation of the points from the trends is 
greater in the case of the fish taken inside. 
