FISHERY BULLETIN: VOL. 83, NO. 4 

 NO" 



125" 120" II5» 110" 



Figure 2.— Geographical regions for which the growth and age composition of northern anchovies were determined. 



and in the remaining offshore region, Catalina Basin 

 (CB). In the San Pedro Channel (SPC), Coronado 

 Escarpment (CE), and Ensenada (E) regions an- 

 chovies reach 120 mm at about age 3. In the Cape 

 San Quentin (CSQ) and Sebastian Viscaino Bay 

 (SVB) regions anchovies reach 120 mm at about age 

 4 or later. 



The Cape San Quentin (CSQ), Sebastian Viscaino 

 Bay (SVB), and Southern Baja California (SB) 

 regions include anchovies from both the central and 



southern stocks, and there are marked differences 

 in their grov^h (Fig. 4). Anchovies from the southern 

 stock appear to reach an asymptotic mean size of 

 about 92 mm, whereas those from the central stock 

 continue to grow throughout their lives. Note the oc- 

 currences of 2- to 4-yr-old fish with monthly mean 

 lengths of about 92 mm (Fig. 4 CSQ, SVB, SB). 

 Assuming that stocks can be identified by size at age, 

 the Cape San Quentin region appears to be 

 dominated by the central stock; however, the 



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