Commonly found in harbors and shallow coastal waters. Move to deeper water in winter. Adults attach their eggs near the base of a sponge to use as a spawning bed (Ref. 34819, 41075). Benthic; feeds on crustaceans, molluscs, sea squirts, squids and fishes (herring, mackerel, smelt, sand lance and silversides (Ref. 5951)) (Ref. 58426).
Commonly found in harbors and shallow coastal waters. Move to deeper water in winter. Adults attach their eggs near the base of a sponge to use as a spawning bed (Ref. 34819, 41075). Benthic. Feeds on crustaceans, zooplankton, zoobenthos, molluscs, sea squirts, squids and fishes (Ref. 13548, 58426). Parasites of the species include 6 protozoans, 3 myxosporidians, 2 nematodes and 4 hirudineans (Ref. 5951).