Pacific Ocean perch (Sebastes alutus) are commonly known as the longjaw rockfish.  They primarily inhabit waters of the upper continental slope and along the edge of the continental shelf at depths of 325 to 1500 feet, with the greatest number occurring from 590 to 720 feet, over gravel, rocky or boulder type substrate associated with gullies, canyons and depressions.  During the summer, they form large schools often as large as 100 feet wide, 260 feet deep and 4200 feet long.  Pacific Ocean perch respond to the dynamics of the Diel Vertical Migration and migrate vertically toward the surface feeding on zooplankton, shrimp, squid, and forage fish.  They are a slow growing and long lived species reaching 21 inches in length and living as long as 90 years.  During the winter Pacific Ocean perch stop feeding and move into water greater than 900 feet deep.  The color of the Pacific Ocean Perch varies from bright red to light red with dark markings on the back above the lateral line and before the tail fin.  The Pacific Ocean Perch have a pink mouth distinguished by a long lower jaw with a large forward directed symphyseal knob located on the end of the lower jaw and a short 2nd anal spine.

Pacific Ocean perch:

Date.......Depth.From.........................T0.........................................................Date.....Depth...From.........................To..............................

06/30/98  1099 4203.98   12436.66   4205.47   12436.84*

07/31/86  774   4204.6     12435.6     4203.2     12435.6*

07/25/83  882   4222.1     12443.4     4223.5     12444.4*

07/01/98  813   4223.28   12443.95   4224.65   12445.11*

07/14/95  876   4223.64   12515.57   4225.08   12514.44*

07/27/83  810   4233.9     12443.6     4235.4     12443.3

07/02/98  469   4234.05   12441.21   4235.54   12440.97*

07/13/95  905   4234.19   12515.83   4232.47   12515.69**

07/27/83  442   4235.5     12440.4     4233.9     12440.5*

07/01/98  866   4236.29   12443.11   4234.86   12443.74*

07/27/83  298   4239.4     12433.2     4240.8     12433.3*

07/27/83  810   4239.9     12443.6     4235.4     12443.3

07/27/83  935   4242.7     12444.0     4244.3     12444.1

07/03/98  698   4253.14   12447.71   4254.42   12448.80*

07/03/98  800   4253.69   12449.40   4254.15   12451.50

07/16/95  803   4254.48   12510.40   4252.95   12510.22**

07/27/83  725   4254.9     12453.5     4256.4     12453.3*

07/28/83  541   4259.8     12445.0     4301.2     12445.0*

07/28/83  853   4300.3     12451.9     4300.9     12451.3*

07/29/83  639   4304.2     12451.1     4305.4     12450.3**

07/02/98  682   4304.26   12447.00   4305.07   12448.62***

07/29/83  672   4304.6     12447.0     4302.4     12448.0

07/16/95  705   4304.86   12512.25   4304.06   12514.06**

08/07/86  688   4305.0     12449.5     4304.8     12447.6*

07/03/98  843   4305.10   12451.74   4306.50   12450.56*

07/17/95  853   4305.39   12508.51   4306.69   12509.72*

08/07/86  419   4311.2     12438.6     4312.0     12437.7*

07/30/83  1108 4314.2     12445.4     4315.7     12444.8*

08/01/83  725   4319.6     12441.5     4321.0     12440.5*

07/04/98  616   4322.31   12443.93   4323.87   12443.63*

08/02/83  718   4332.8     12435.1     4331.3     12435.6*

08/02/83  672   4333.9     12434.2     4335.4     12434.1*

07/17/95  1128 4334.76   12521.53   4333.14   12521.50*

08/02/83  948   4336.5     12436.9     4338.0     12436.4*

08/08/86  360   4338.2     12422.0     4339.7     12421.8*

08/03/83  629   4340.0     12433.1     4338.2     12433.0*

08/03/83  570   4341.5     12431.6     4343.0     12431.7*

08/03/83  738   4341.7     12434.6     4343.1     12434.9*

08/03/83  629   4345.9     12433.5     4347.4     12433.4*

08/03/83  551   4346.5     12432.0     4345.0     12431.9*

08/09/86  449   4346.6     12430.2     4348.0     12430.2*

08/03/83  679   4347.5     12434.2     4349.0     12434.2*

08/04/83  636   4351.7     12434.2     4350.0     12434.1*

07/19/95  652   4353.50   12525.02   4355.16   12524.87*

07/06/98  731   4353.60   12449.28   4354.31   12451.25*

07/19/95  774   4353.61   12510.27   4354.31   12508.39*

08/09/83  689   4354.1     12436.7     4355.2     12438.1*

07/19/95  627   4354.46   12516.85   4354.46   12514.75*

08/09/83  557   4355.1     12448.4     4356.0     12450.0

07/06/98  643   4355.15   12440.95   4354.58   12443.04*

08/09/86  492   4356.3     12449.5     4356.2     12451.7*

08/10/83  830   4358.7     12457.0     4400.2     12456.6*

08/10/83  751   4401.2     12456.2     4402.6     12455.9**

08/11/83  403   4403.6     12427.0     4402.1     12426.8*

07/06/98  698   4404.26   12455.95   4405.88   12456.25*

08/10/83  648   4405.3     12455.8     4403.8     12455.7*

08/10/86  479   4405.9     12454.4     4404.3     12454.8*

08/10/83  347   4406.4     12447.2     4405.9     12445.6*

08/17/83  679   4408.6     12456.7     4407.2     12456.4*

07/08/98  695   4416.35   12454.51   4415.09   12455.58

07/21/95  794   4423.94   12512.24   4425.37   12513.13*

08/16/83  1200 4429.1     12451.4     4430.4     12452.6***

07/21/95  964   4435.21   12520.43   4433.69   12520.89*

08/16/83  961   4439.6     12440.5     4440.9     12440.4*

07/11/98  695   4445.42   12434.88   4443.94   12435.52*      

08/13/86  816   4446.2     12435.3     4447.6     12434.6*

08/17/83  564   4448.2     12430.1     4446.5     12430.7*

08/21/83  787   4452.4     12430.0     4453.8     12429.4*

07/12/95  846   4453.30   12446.42   4452.32   12547.81***

07/12/98  695   4455.53   12425.78   4454.29   12427.11*

08/14/86  492   4455.8     12416.5     4457.2     12416.2*

08/13/86  498   4458.1     12416.0     4459.6     12416.1*

08/20/83  1079 4458.9     12427.9     4459.9     12427.9

07/25/95  1102 4503.26   12532.41   4504.62   12533.56*

07/13/98  803   4503.85   12422.55   4505.31   12421.70* 

08/22/83  1079 4504.4     12425.1     4505.9     12424.8**

07/12/98  954   4504.57   12442.28   4304.18   12540.79***

08/22/83  1108 4504.9     12428.8     4506.0     12430.5**

07/25/95  803   4505.60   12538.71   4504.13   12537.92*

08/22/83  702   4505.7     12419.6     4504.2     12419.7*

08/14/86  659   4505.9     12418.7     4507.3     12418.9*

08/14/86  751   4505.9     12420.3     4504.3     12420.7*

07/24/95  1151 4506.39   12525.84   4504.91   12526.56*

08/22/83  702   4507.8     12419.6     4504.2     12419.7*

08/21/83  1063 4516.2     12421.6     4517.5     12422.3*

07/14/98  666   4516.97   12419.33   4515.41   12419.05*

07/14/98  662   4525.30   12423.08   4523.95   12422.45*

08/23/83  1036 4527.0     12427.1     4528.5     12427.7*

08/23/83  580   4528.9     12418.7     4527.3     12418.8*

07/15/98  698   4533.11   12427.05   4534.63   12427.96*

07/15/98  629   4533.38   12425.12   4534.82   12425.89*

07/27/95  767   4534.22   12531.54   4532.72   12531.93*

08/21/83  665   4539.0     12428.5     4540.7     12428.8*

07/28/95  692   4543.63   12523.61   4545.06   12522.88

07/15/98  600   4544.02   12430.50   4545.24   12431.87*

07/28/95  623   4544.94   12526.80   4543.98   12528.57*

07/15/98  679   4545.16   12437.17   4543.65   12436.51

07/15/98  771   4545.72   12439.27   4544.87   12441.34*

07/27/95  813   4546.12   12520.32   4544.72   12519.23*

07/15/98  663   4546.27   12435.15   4544.85   12434.38*

08/24/83  623   4550.2     12437.2     4551.5     12438.7***

07/27/95  508   4553.00   12530.24   4554.44   12530.22*

07/12/98  846   4553.30   12446.42   4552.32   12447.81***

07/16/98  797   4553.01   12442.31   4554.80   12442.69*

08/22/83  629   4602.2     12439.7     4600.7     12440.2*

08/23/83  311   4602.8     12414.1     4603.7     12416.1*

08/16/86  1079 4603.5     12445.0     4602.6     12446.8*

07/19/98  767   4603.66   12442.31   4605.22   12442.13**

07/29/95  679   4603.67   12519.03   4605.25   12519.20*

07/30/95  439   4604.14   12533.17   4605.67   12532.55*

08/25/83  738   4609.2     12439.7     4610.0     12438.3***

08/25/83  377   4612.0     12420.2     4610.6     12420.1*

07/19/98  794   4614.44   12424.64   4615.77   12424.01*

08/23/83  629   4618.3     12436.5     4617.7     12435.9***

08/27/83  689   4620.7     12435.6     4621.9     12435.8**

08/18/86  659   4623.5     12434.3     4624.5     12433.6**

08/19/86  396   4624.2     12428.0     4625.6     12427.0*

08/25/83  419   4625.0     12428.7     4626.7     12427.8*  

08/25/83  629   4625.2     12432.7     4624.0     12433.6  

07/21/98  734   4634.63   12433.78   4634.24   12435.95*

08/19/86  364   4628.6     12427.7     4629.9     12426.8*

08/01/95  757   4633.90   12528.43   4634.42   12527.63*

08/01/95  908   4634.15   12524.81   4634.22   12526.81*

08/19/86  396   4634.8     12426.7     4635.6     12428.5*

08/26/83  648   4637.6     12438.4     4636.3     12437.3**

08/19/86  377   4637.9     12429.5     4639.4     12429.9*

08/26/83  505   4637.9     12437.5     4636.9     12435.4*

Return to Triennial Trawl Survey.