SPAWNING OF GALAXIAS OLIDUS IN BRUCES CREEK 
117 
Age 
Class 
Length 
Range 
(mm) 
Fish 
Nos 
% Popn 
Ripe Males 
No. % 
Ripe Females 
No. % 
Immature 
Fish 
No. % 
Male: 
female 
ratio 
0 + 
36-52 
83 
31.6 
17 
20.5 
4 
4.8 
62 
74.7 
4.1:1 
1 + 
53-72 
150 
57.0 
8.0 
53.3 
70 
46.7 
0 
0 
1.1:1 
2 + 
73-82 
24 
9.1 
4 
16.7 
20 
83.3 
0 
0 
1:4.0 
3+ 
83-100 
6 
2.3 
0 
0 
6 
100 
0 
0 
N/A 
Total 
263 
101 
100 
62 
1.0:1 
Table 1. Length range, number of fish collected, percentages of ripe males, females and immature fish, and sex 
ratios for each age class of the Galaxias olidus population during the 1990 spawning season in Bruces 
Creek. 
50 60 
70 
80 
90 
Female Body Length (mm) 
% 3. Relationship between length and fecundity for Galaxias olidus females in Bruces Creek. 
