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![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 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](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_fish7984.jpg?itok=-AeE3Uis)
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. (Image credit: NOAA Central Library Historical Fisheries Collection; P. 97 of Our Changing Fisheries 1970 Centenary NMFS centenary volume)