CONTENTS 



page 



Introduction 3 



A. Apparatus and methods used 8 



B. Method of determining the age of fishes 12 



C. Statement of the results ■ 15 



1. Plaice ( Pleuronectes platessa) 15 



2. Plound er (Pleuronectes flesus) 22 



3. Dab (Pleuronectes limanda) 23 



4. Long-rough dab (Sippoglossoides platessoides) 25 



5. and 6. Cod (Gadus morrhua) and Haddock (Gadus aeglefinus) 26 



7. Whiting (Gadus merlangus) 35 



8. Concluding remarks 38 



