Shortraker rockfish (Sebastes borealis) primarily inhabit the offshore waters on the outer edge of the continental shelf and the upper portion of the continental slope.  They occur at depths of 160 to 2100 feet with the greatest number occurring from 660 to 1300 feet among boulders 0.5 to 4 meters in diameter or over fine grained substrates of silt or pebbles.  They seemed to prefer a sloping bottom of 3 to 12 degrees in areas with currents ranging from 0.1 to 0.4 km/hr.  They are also common over hard steeply sloped bottoms.  Shortraker rockfish respond the Diel Vertical Migration by rising toward the surface feeding primarily on forage fish and zooplankton. 

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