118 
Fishery Bulletin 106(2) 
Table 2 
Proportional morphometries and meristics of Sebastes aleutianus (rougheye rockfish) and Sebastes melanostictus (blackspotted 
rockfish) for all specimens examined. Morphometric data are given in percent SL (standard length) and presented as the range, 
followed by the mean ± standard deviation (SD). P values are reported for statistically significant differences at 0.05 level, as 
evaluated by ANCOVA or Kruskal-Wallis tests when appropriate; ns = not statistically significant at an « level of 0.05. 
Sebastes aleutianus 
Sebastes melanostictus 
n 
Range (mean ±SD) 
n 
Range (mean ±SD) 
P 
Standard length (mm) 
117 
63.4-555.2 
193 
95.5-539 
Meristics 
Dorsal-fin spines 
114 
12-14 (13.0 ±0.2) 
182 
12-14 (13.0 ±0.2) 
ns 
Dorsal-fin rays 
109 
12-14 (13.5 ±0.5) 
184 
13-15 (13.7 ±0.5) 
<0.001 
Anal-fin rays 
108 
6-8 (7.1 ±0.3) 
182 
6-8 (7.1 ±0.3) 
ns 
Pectoral-fin rays 
106 
17-19(18.1 ±0.3) 
170 
17-19 (18.1 ±0.4) 
ns 
Unbranched pectoral-fin rays 
99 
4-9 (7.7 ±0.9) 
177 
5-10(7.9 ±0.7) 
ns 
Lateral-line pores 
105 
30-34(31.4 ±1.0) 
184 
30-36(32.0 ±1.2) 
<0.001 
Gill rakers 
116 
29-34 (31.2 ±1.0) 
191 
30-36 (33.0 ±1.2) 
<0.001 
Gill rakers of upper arch 
98 
8-10(9.1 ±0.5) 
165 
8-11 (9.6 ±0.6) 
<0.001 
Gill rakers of lower arch 
98 
21-24(22.1 ±0.8) 
165 
21-26 (23.4 ±0.8) 
<0.001 
Morphometries 
Head length 
106 
33.5-41.4 (36.8 ±1.4) 
179 
34-41.4 (37.6 ±1.4) 
0.006 
Orbit length 
93 
8.7-13.5 (10.7 ±1.1) 
145 
8.2-13.3 (10.2 ±0.9) 
Snout length 
93 
5. 7-9. 7 (7.5 ±0.7) 
143 
6. 2-9. 6 (8 ±0.6) 
<0.001 
Interorbital width 
93 
5. 5-8. 9 (7.2 ±0.7) 
141 
5.6-9. 2 (7.5 ±0.7) 
Suborbital depth 
90 
1.6-2. 9 (2.3 ±0.3) 
141 
1.5-3. 3 (2.3 ±0.3) 
ns 
Upper jaw length 
89 
16.9-21.1(19.1 ±0.7) 
141 
17.2-21.5 (19.2 ±0.8) 
Lower jaw length 
91 
20.4-27.2 (23.6 ±1.2) 
138 
21.6-27.1 (24.6 ±1.0) 
<0.001 
Gill raker length 
106 
3.4— 6.3 (4.9 ±0.6) 
178 
3. 9-7.1 (5.6 ±0.6) 
<0.001 
Depth at pelvic-fin base 
89 
31.6-42.6 (36.1 ±1.9) 
143 
31.3-40.1 (35.3 ±1.9) 
0.005 
Depth at anal-fin origin 
97 
23.5-31.9 (27.9 ±1.6) 
154 
22.8-30.5 (26.6 ±1.6) 
<0.001 
Depth at anal-fin insertion 
90 
11.4-15.6 (13.8 ±0.8) 
144 
11.3-15.6(13.5 ±0.9) 
0.003 
Dorsal-fin spine I length 
91 
4. 3-7.2 (5.8 ±0.6) 
135 
5. 9-9. 6 (7.8 ±0.7) 
<0.001 
Dorsal-fin spine IV length 
97 
9.8-15.5 (13.2 ±1.0) 
151 
12-18.4 (14.8 ±1.2) 
<0.001 
Dorsal-fin ray length 
82 
13.5-20(16.6 ±1.3) 
135 
10.4-18.8 (15.5 ±1.3) 
Pectoral-fin base depth 
88 
8.4-10.4 (9.4 ±0.4) 
142 
8.2-10.4(9.5 ±0.4) 
ns 
Pectoral-fin ray length 
90 
24.4-31 (27.3 ±1.3) 
140 
22-30 (26.3 ±1.4) 
<0.001 
Pelvic-fin ray length 
92 
19.3-25.1 (22.1 ±1.1) 
159 
18.8-25 (21.4 ±1.2) 
<0.001 
Pelvic-fin spine length 
103 
9.5-16.6 (13.4 ±1.3) 
160 
9.6-16.9(13.7 ±1.2) 
ns 
Anal-fin spine I length 
94 
4. 5-9.7 (6.8 ±1.1) 
156 
4.5-10.1 (7 ±1.1) 
ns 
Anal-fin spine II length 
94 
11-18.4(14.5 ±1.9) 
147 
11.8-19.6 (14.9 ±1.9) 
ns 
Anal-fin spine III length 
95 
13-20.2 (16.6 ±1.5) 
153 
12.2-21.3 (16.5 ±1.7) 
ns 
Anal-fin ray 1 length 
63 
16-24.2 (19.5 ±1.6) 
119 
15.3-25 (18.9 ±1.8) 
Anal-fin ray 2 length 
62 
17.4-26.4(21.1 ±1.8) 
115 
16.7-26.9(19.9 ±2.0) 
Last anal-fin ray length 
62 
6-12.6 (10.4 ±1.1) 
113 
8.3-13.7 (10.4 ±0.8) 
Caudal peduncle depth 
90 
7.8-10.7 (9.6 ±0.5) 
141 
7.9-10.6(9.2 ±0.5) 
<0.001 
Caudal peduncle dorsal length 
87 
10.5-13.9 (12 ±0.8) 
141 
11.1-15 (12.9 ±0.7) 
<0.001 
Caudal peduncle ventral length 
89 
17.7-21.9(19.5 ±0.9) 
141 
17.4-22.5 (20.1 ±1.0) 
<0.001 
Preanal length 
89 
67.1-77.6 (71.8 ±2.3) 
141 
63.2-78.5 (70.2 ±2.6) 
<0.001 
Predorsal length 
90 
30.3-39.3 (34.3 ±1.7) 
141 
31.6-38.4 (34.9 ±1.4) 
ns 
Pelvic-fin base to anal-fin origin length 
87 
25.9-37 (30.8 ±2.6) 
139 
23.8-38.6 (30.9 ±2.9) 
ns 
Spinous dorsal-fin-base length 
91 
30.8-41.7 (35.7 ±2.3) 
141 
32.4-41.2 (36.4 ±2.0) 
ns 
Soft dorsal-fin-base length 
90 
20.2-25.8 (22.8 ±1.2) 
141 
17.3-24.7 (21.4 ±1.5) 
<0.001 
Anal-fin base length 
89 
13.1-18.2 (15.2 ±0.9) 
141 
12.4-17 (14.2 ±1.0) 
Pre-pelvic-fin length 
87 
37.8-53.1 (44.2 ±3.8) 
139 
36.6-52.6 (42.6 ±2.8) 
Caudal-fin length 
80 
20-28.1 (24 ±1.5) 
128 
19.2-25.2 (22 ±1.2) 
