I 2 3 4 5 6 7 8 9 10 II 12 13 14 15 16 17 18 

 WEIGHT (POUNDS) 



Figure 5. --Weight composition of skipjack by- 

 months for the combined data of 1951 to 1955. 



Little Tunny 



Measurements were made of 208 little 

 tunny, which averaged 4. S pounds (48 cm. ) and 

 ranged from about 1 to 15 pounds (30 to 70 cm.). 



2 3 4 5 6 7 8 9 10 II 12 13 14 15 16 17 18 

 WEIGHT (POUNDS) 



Figure 6. --Weight composition of little tunny by 

 months for the combined data of 1951 to 1955. 



The weight composition by months for the 

 combined data of all years, shown in figure 6, 

 suggests a slight progression of modes initially 

 located at 1 and 6 pounds in June. However, 

 the progression may be an artifact caused by 

 combining variable annual data, for it is not in- 

 dicated in the data for individual years (table 5). 

 Rather, these data show a strong influx of 2- 

 pound (36 cm.) fish during August, September, 

 and October, 1951, and of 1-pound fish (30 cm. ) 

 during June, July, and August, 1952. There are 

 relatively small numbers of 1- and 2-pound fish 

 in other years. Fish of 6 to 8 pounds (50 to 57 

 cm.) seem to form a second modal group in 

 1951, 1954, and 1955, whereas a third modal 

 group at 10 to 11 pounds (60 to 63 cm.) may be 

 present in 1952. Thus the presence of at least 

 two and possibly three age groups is indicated. 

 Further discussion is not warranted because of 

 the paucity of the present data. 



