442 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



START OF 

 SCALE GROWTH 



ACCESSORY 

 ANNULUS 



3 

 z 

 z 

 < 



4 

 5 



Figure 2. — Plastic impression of a scale from a 5-year-old haddock. Five annuli and the accessory annulus 



are visible. 



