of depths of less than on the continental shelf. Biology Hexagrammidae greenlings are demersal fishes, except for the pelagic Pleurogrammus, and they feed on crustaceans, polychaetes, small fishes and fish eggs. Utilization Hexagrammidae greenlings are fished for, the coastal species are fished for using hook and line and spears and in the late 20th and early 21st centuries the kelp greenling (Hexagrammas decagrammus) has become a target of a commercial fishery, while historically the lingcod (O. elongatus) and the atka mackerels of the genus Pleurogrammus have been the most targeted species. References Cottoidei Ray-finned fish families