Age Determination Methods for Northwest Atlantic Species

February 28, 2020

This manual documents age determination techniques used by staff at the Woods Hole Laboratory to determine the age of various species from the New England and the Mid-Atlantic region. Published in 1988.

This is the full text of the 1988 manual describing methods for 18 species, including good-quality images. Many techniques have changed over the years, and an updated edition will be forthcoming. In the meantime, please contact Eric Robillard ( for more information.  

Last updated by Northeast Fisheries Science Center on 03/30/2020

Age and Growth Otolith Age and Growth Program