Lorenzo and Pa|uelo: Biology of Promethichthys prometheus 



97 



as a spawning ring, may form within an opaque zone, 

 dividing it into two. 



The oldest age class observed was XI years, al- 

 though this class, as well as age classes IX and X, 

 were poorly represented in the landings. As a whole, 

 growth of the roudi escolar is relatively fast and 



males and females grow at equal rates. The growth 

 parameters obtained are reasonable because the 

 theoretical maximal length value is greater than the 

 size of the largest fish sampled and because the 

 growth coefficient value indicates relatively rapid 

 attainment of maximal size. 



