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pl23_fish7984.jpg

Scientists are able to determine the age of a fish by counting the number ofyearly deposits of bone on the otoliths (ear bones) of fish

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Description

Scientists are able to determine the age of a fish by counting the number ofyearly deposits of bone on the otoliths (ear bones) of fish. Otoliths of thepollock - a codlike fish - are being removed in a study of the growth of thespecies.

Credit

NOAA Central Library Historical Fisheries Collection; P. 97 of Our Changing Fisheries 1970 Centenary NMFS centenary volume

Collection

Historic Fisheries