426 
BULLETIN OE THE BUREAU OF FISHERIES 
Table 7. — Length frequencies of 20,082 spots 
[Measurements to nearest millimeter, grouped in 5-millimeter intervals] 
Total length 
Decem- 
ber 
Janu- 
ary 
Febru- 
ary 
March 
April 
May 
June 
July 
August 
Sep- 
tember 
Octo- 
ber 
No- 
vember 
0-4 
102 
3 
12 
5-9 
20 
64 
31 
5 
10-14 
64 
44 
73 
7 
7 
15-19 
94 
180 
1,179 
16 
24 
20-24 
3 
163 
1,081 
70 
36 
25-29 . 
5 
313 
130 
104 
1 
30-34 
53 
190 
172 
38 
35-39 _ 
4 
74 
89 
68 
40-44 _ 
30 
76 
116 
1 
45-49 
3 
84 
183 
4 
50-54 - 
1 
97 
194 
5 
55-59 
100 
59 
29 
60-64 
84 
48 
63 
65-69 
63 
28 
32 
1 
70-74 
37 
44 
65 
14 
75-79 . 
25 
51 
77 
21 
80-84 - 
1 
2 
1 
16 
39 
86 
34 
2 
85-89 
8 
10 
4 
2 
36 
85 
41 
4 
90-94 
30 
93 
4 
14 
4 
26 
53 
54 
28 
3 
5 
95-99 
88 
261 
17 
1 
31 
6 
16 
49 
63 
36 
8 
4 
100-104 
259 
583 
124 
16 
54 
12 
10 
39 
88 
48 
19 
8 
105-109 
360 
625 
312 
36 
67 
29 
15 
26 
86 
72 
50 
11 
110-114 
534 
676 
457 
71 
56 
52 
6 
21 
67 
59 
45 
41 
115-119 
358 
509 
303 
99 
69 
53 
5 
15 
74 
83 
41 
62 
120 -m 
219 
446 
186 
87 
66 
51 
11 
11 
48 
74 
41 
115 
125-129 
121 
302 
84 
77 
54 
41 
26 
3 
30 
57 
47 
119 
130-134 
101 
241 
65 
82 
60 
32 
29 
2 
12 
35 
58 
157 
135-139 
81 
190 
29 
46 
44 
29 
28 
4 
8 
19 
56 
110 
140-144 
52 
150 
25 
38 
31 
16 
37 
7 
7 
14 
25 
110 
145-149 
42 
93 
13 
28 
25 
10 
22 
9 
5 
5 
8 
67 
150-154 
27 
50 
16 
22 
35 
7 
22 
4 
4 
7 
23 
79 
155-159 
24 
25 
5 
14 
28 
3 
8 
1 
3 
14 
59 
160-164 
10 
18 
5 
25 
32 
7 
12 
3 
7 
9 
22 
58 
165-169 _ 
6 
14 
4 
17 
48 
3 
5 
2 
13 
13 
29 
170-174 
1 
10 
4 
7 
35 
6 
4 
3 
8 
5 
31 
175-179 
2 
4 
1 
10 
29 
7 
1 
2 
3 
3 
5 
24 
180-184 
3 
3 
5 
7 
28 
2 
3 
2 
2 
4 
4 
34 
185-189 - 
2 
3 
1 
3 
20 
4 
2 
1 
4 
6 
190-194 
1 
1 
26 
4 
1 
1 
3 
8 
195-199 
1 
1 
2 
19 
2 
1 
1 
3 
200-204 
1 
2 
1 
17 
1 
2 
2 
1 
205-209 
4 
1 
1 
3 
1 
1 
210-214 
1 
4 
1 
2 
215-219 
5 
i 
2 
1 
220 224 
2 
225-229 
1 
1 
230-234 
1 
1 
2 
I 
9.25 239 
1 
240-244 
245-249 
250-2.54 
3 
255-259 
1 
260-264 
2 
i 
905—269 
1 
Table 8. — Monthly summaries of length measurements of spots during their first 18 or 19 months 
Month 
O class 
I class 
Number 
of fish 
Smallest 
Largest 
Average 
Number 
of fish 
Smallest 
Largest 
Average 
Milli- 
Milli- 
Milli- 
Milli- 
Milli- 
Milli- 
meter 
meter 
meter 
meter 
meter 
meter 
December 
122 
1.5 
9.2 
3.7 
2, 329 
84 
188 
i 115.6 
January 
228 
4 
21 
12.6 
4, 310 
82 
195 
i 116.9 
February 
435 
3 
27 
18.5 
1, 660 
91 
200 
i 115.8 
March. . ... 
2,703 
10 
39 
20.3 
690 
93 
200 
130.4 
April... 
526 
7.5 
54 
29.8 
875 
84 
214 
137.0 
May 
1,020 
11 
94 
45.8 
376 
97 
215 
123.0 
June. -- 
983 
29 
119 
57.7 
210 
122 
198 
142.6 
.Tilly 
664 
43 
127 
81.4 
641 
67 
139 
104.6 
543 
81 
153 
115. 5 
478 
92 
170 
129.5 
1, 140 
90 
188 
139.3 
i Reason for decrease in average length in December explained in text. 
