4 
Fishery Bulletin 106(1) 
Table 2 
Species of rockfish captured in the Gulf of Alaska and Aleutian Islands trawl surveys across all years (1990-2005). The number 
captured in all years combined, the number of trawl hauls with catch, and the length distributions (FL, in mm) of juvenile and 
adult rockfish captured in the bottom trawl surveys are also provided. Dashed lines indicate either no catch in that category or 
insufficient length data were collected to distinguish juveniles and adults. 
Species 
Common name 
No. 
captured 
No. of 
trawl hauls 
with catch 
Juvenile 
length 
distribution 
Adult 
length 
distribution 
Sebastes alutus 
Pacific ocean perch 
1,651,753 
3059 
40-250 
250-620 
Sebastes aleutianus 
Rougheye rockfish 
36,250 
1894 
50-439 
439-820 
Sebastes polyspinis 
Northern rockfish 
459,372 
1547 
50-361 
361-500 
Sebastolobus alascanus 
Shortspine thornyhead 
171,405 
1515 
40-215 
215-770 
Sebastes borealis 
Shortraker rockfish 
14,549 
676 
50-449 
449-1030 
Sebastes variabilis 
Dusky rockfish 
22,622 
633 
130-428 
428-560 
Sebastes babcocki 
Redbanded rockfish 
2985 
509 
110-420 
420-630 
Sebastes variegatus 
Harlequin rockfish 
28,834 
462 
60-230 
230-420 
Sebastes zacentrus 
Sharpchin rockfish 
63,343 
442 
Females 70-265, 
Males 70-240 
Females 265-660, 
Males 240-660 
Sebastes brevispinis 
Silvergray rockfish 
11,279 
340 
Females 150-415, 
Males 150-395 
Females 415-720, 
Males 395-720 
Sebastes helvomaculatus 
Rosethorn rockfish 
2447 
158 
100-215 
215-360 
Sebastes proriger 
Redstripe rockfish 
17,868 
151 
Females 100-290, 
Males 100-280 
Females 290-480, 
Males 280-480 
Sebastes ruberrimus 
Yelloweye rockfish 
287 
125 
Females 90-450, 
Males 90-540 
Females 450-740, 
Males 540-740 
Sebastes elongatus 
Greenstriped rockfish 
750 
77 
Females 100-220, 
Males 100-240 
Females 220-380, 
Males 240-380 
Sebastes ciliatus 
Dark rockfish 
1607 
65 
210-428 
428-500 
Sebastolobus altivelis 
Longspine thornyhead 
4463 
46 
60-190 
190-340 
Sebastes wilsoni 
Pygmy rockfish 
514 
44 
— 
- 
Sebastes crameri 
Darkblotched rockfish 
122 
43 
Females 120-390, 
Males 120-370 
Females 390-500, 
Males 370-500 
Sebastes melanops 
Black rockfish 
542 
34 
230-400 
400-590 
Sebastes maliger 
Quillback rockfish 
98 
30 
230-290 
290-480 
Sebastes reedi 
Yellowmouth rockfish 
690 
20 
Females 240-380, 
Males 240-370 
Females 380-550, 
Males 370-550 
Sebastes pinniger 
Canary rockfish 
182 
20 
Females 390—510, 
Males 390-430 
Females 510-630, 
Males 430-630 
Sebastes diploproa 
Splitnose rockfish 
55 
20 
90-270 
270-270 
Sebastes flavidus 
Yellowtail rockfish 
423 
17 
Females 330—405, 
Males 330-380 
Females 405-580, 
Males 380-580 
Sebastes entomelas 
Widow rockfish 
86 
14 
Females 350-365 
Females 365-570, 
Males 345-570 
Sebastes paucispinis 
Bocaccio 
9 
8 
— 
690-720 
Adelosebastes latens 
Aleutian scorpionfish 
6 
3 
— 
— 
Sebastes emphaeus 
Puget Sound rockfish 
11 
2 
— 
170-180 
Sebastes saxicola 
Stripetail rockfish 
9 
2 
— 
100-270 
Sebastolobus macrochir 
Broadfin thornyhead 
4 
2 
— 
— 
Sebastes miniatus 
Vermilion rockfish 
2 
1 
— 
— 
Sebastes nigrocinctus 
Tiger rockfish 
1 
1 
— 
— 
In order to determine the species composition of rock- 
fish assemblages, the CPUE-weighted distribution of 
each of the species subgroups was computed for each 
environmental variable with the formulation given in 
May (1973) and Murawski and Finn (1988) (Fig. 2). A 
weighted mean value for each environmental variable 
