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NOAA Photo Library Image - fish7984

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

Image ID: fish7984, NOAA's Historic Fisheries Collection
Credit: NOAA Central Library Historical Fisheries Collection; P. 97 of "Our Changing Fisheries" 1970 Centenary NMFS centenary volume

High Resolution Photo Available





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Last Updated:
May 12, 2014