7203

• UCREFRP Catalog Number: 7203
• Author: Osmundson, D. B. and L. R. Kaeding.
• Title: Colorado Squawfish and Razorback Sucker Grow-Out Pond Studies as Part of Conservation Measures for the Green Mountain and Ruedi Reservoir Water Sales
• USFW Year: 1989.
• USFW - Doc Type: Final Report.
• Copyright Material: NO

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our efforts and air-shipped the remaining two individuals to Dexter NFH
for use in the brood stock program.
Grow-out Pond Investigations
Fish Chalet Pond
Growth
Colorado squawfish did not grow as fast in Fish Chalet Pond as they did in
the other three ponds (Fig. 1). Growth was also much slower than it was
after squawfish were stocked in Fish Chalet in 1983 (see Osmundson 1987).
Temperature (24 C) was nearly optimal for growth when squawfish were
stocked in 1986, but it dropped rapidly to 15-16 C during the following
month. Mean condition (K) of squawfish dropped from 0.74 when they were
stocked (31 August) to 0.57 on 10 November, and was 0.55 by 3 March 1987
(Fig. 2); the average condition while in the ponds was 0.62 (mean of means
from Appendix Table 6).
375
E
E
= 300
H
w 225
J
J
FQ-
p 150
F-
Z
W 75
2
0
1986 1987 1988 1989
FC -- - WS - - 13 -9- HU
Figure 1. Growth of Colorado squawfish in Fish Chalet (FC), West (WS),
13th Hole (13) and Humphrey (HU) ponds, 1986-89.
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