168 Investigations on the Life-History 



From this Table it will be seen : 



1 . That the total food value of estuary fish remains nearly constant 

 throughout the year, the poorer quality of the flesh in the later months 

 being compensated for by the larger size of the average fish caught. 



2. That from May to August the total food value of the fish caught 

 in upper waters is about one-third less than that of estuary fish. 



3. That the upper-water fish of October and November are of much less 

 value as a food stuff than any other group of unspawned fish, their value 

 being only one-half of that of the upper-water fish of the earlier months, 

 and one-third of that of the estuary fish. 



