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Age and Growth Results

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Age and Growth Homework: Determining How Old Fish Are

Our scientists use technology and ingenuity to get their work done from home.
July 02, 2020 - Feature Story ,
Scientist in front of equipment

Age and Growth

NOAA Fisheries scientists assess the age and growth rates of fish species and populations to better monitor, assess, and manage stocks.
Columns of ear stones. Each column is from a different species. Otoliths from six species aligned at the core and ready to be sectioned. Photo: Sandy Sutherland, NOAA Fisheries.

Brodeur's Guide to Otoliths of Some Northwest Atlantic Fish

This second edition of Brodeur (1979) includes the original drawings of sagittal otoliths for 51 common fish of the Northwest Atlantic. Species names have been updated, and new citations have been included to give it a more contemporary perspective.
February 28, 2020 - Document ,
cod-drawing-Brodeur.png

Age Determination Methods for Northwest Atlantic Species

This manual documents age determination techniques used by staff at the Woods Hole Laboratory to conduct age and growth studies and determine the age of various species from the New England and the Mid-Atlantic region.
February 28, 2020 - Technical Memo ,
Buttterfish otoliths.png

Reference Collections For Age Determination Of Select Northwest Atlantic Species

The Fishery Biology Program has photographs of our reference collections (known-age fish) for various species. Currently, there are images available for Atlantic cod, haddock, and American shad.
February 28, 2020 - Data Set ,
HADREFCOLL.png

How To Request Samples From The Age-Structure Archive

Guidance for requesting a loan of age structures from the Northeast Fisheries Science Center's archived collection.
February 19, 2020 - Document ,
Buttterfish otoliths.png

Age and Growth Studies in the Northeast

The Fishery Biology Program in the Northeast conducts age and growth studies. Knowing the age structure of a fish population helps to monitor, assess, and manage stocks for long-term benefits.
Otolith aging, using microscop and large monitors.

Alaska Fisheries Interaction Team Pacific Cod Maturity Study

The Status of Stocks and Multispecies Assessment Program, Fishery Interaction Team, was formed to investigate the effects of commercial fishing on top trophic level consumers.
Pacific cod sample under a microscope

Alaska Fisheries Interaction Team Pacific Cod Localized Depletion Study

The Status of Stocks and Multispecies Assessment Program, Fishery Interaction Team, was formed to investigate the effects of commercial fishing on top trophic level consumers.
Alaska Fisheries Interaction Team - Pacific Cod Localized Depletion Study.jpg

Alaska Fisheries Interaction Team Atka Mackerel Food Habits

The Status of Stocks and Multispecies Assessment Program, Fishery Interaction Team, was formed to investigate the effects of commercial fishing on top trophic level consumers.
Left: fish head. Right: Two scientists looking into a blue bowl