Abstract
Laboratory experiments were conducted to determine the substrate preference of American plaice and the interaction between substrate and temperature preference. When given a choice of several substrate types, American plaice clearly preferred substrates that had a finer particle size than gravel, but did not totally avoid any substrate type. When given a choice between sand and gravel, they clearly preferred sand. Preference for substrate took precedence over temperature preference down to a temperature of‐1.0°C. An examination of field data showed that American plaice were widely distributed across both gravel and sand substrates at temperatures above and below‐1.0°C. Broad tolerances of substrate and temperature are probably a factor in this species’ wide distribution throughout the northwest Atlantic.
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