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Fishery Bulletin 98(4) 



estimated von Bertalanffy growth parameters (standard 

 error) for all aged fish (n=854) were L^=459(31) mm, 

 K=0.in (0.028)/yr, and fo=-6.6 (1.3) yr Predicted lengths 

 at age were similar to mean lengths at age (Table 4, Fig. 4). 

 The adjusted r^ for the growth model was 0.40. 



Fishery-based length-frequency data were transformed 

 into age frequencies by using age- length keys constructed 



from the ages of the fish in our study. Full recruitment into 

 both the recreational and commercial fisheries occurred 

 at age 4. Sui'vivorship (standard error) of red porgy was 

 estimated to be 0.42(0.001) from the headboat fishery 

 data, 0.54(0.046) from the recreational fishery data and 

 0.58(0.014) from the commercial fishery data. Instanta- 

 neous mortality estimates (Z=-ln survivorship) were 0.87 



Table 3 



Number of males, number of females, and percentage of male red porgy in relation to the total number of se.xed individuals by 

 length and age from the eastern Gulf of Mexico. 



