9465

• UCREFRP Catalog Number: 9465
• Author: Burdick, B.
• Title: Monitoring and Evaluating Various Sizes of Domestic-Reared Razorback Sucker Stocked in the Upper Colorado and Gunnison Rivers
• USFW Year: 2003.
• USFW - Doc Type: 1995-2001.
• Copyright Material: NO

upstream from Parachute. This marked the first juvenile razorback sucker stocked in this stream
reach (Appendix; Table C.5; Figure C.5.).
10

.p
C
R
O
t 6
F-
L
4
0
d
E
3
Z 2
GUNNISON & COLORADO RIVERS COMBINED
411 Q n A all 1011 V v Ra orback Sucker Stocked-
16.7
16.1
14.8
13.$13.2 1211
10.2
6.1
ANN 3.4
a -
April 1994-October 2001
Total Fish Stocked: 49,954
Mean Total Length: 187 mm
N = 42,023
Range: 75-586 mm
1611
2dn
24
1.0 0.8 0.7 1.1 0.1 0.1
0.2 <0.1
0
y o, o? o, a a a a w a °?b a e a a a% a?
? , ry`e' ,ry0` f?l ,ry°? ,?"i gib ,ary ,a°` ,0, ,a°',y`t' ,ya,y1 ,y9 yp
4S NA fp ry?'yR,yOr Q?ye30p14% 4y 4A a000?y00I*kx Ap 43% AO 0 -1
TOTAL LENGTH (MM)
Figure 3. Length-frequency distribution of razorback sucker stocked into the Gunnison
and Upper Colorado rivers between April 1994 and October 2001. Note:
numbers above the bars represent percent. Note: the total number of
razorback sucker stocked and `N' do not coincide because, in some instances,
only a sub-sample of fish stocked on a particular day were measured.
Therefore, not all fish stocked were measured.
In 2000, juvenile razorback sucker were harvested from 14 different sources, one of these
being the 24-Rd Hatchery (Appendix; Table C.6.). Sixty-one percent of the fish stocked into the
Upper Colorado and Gunnison rivers were reared at the 24-Rd Hatchery. The other 13 sites were
grow-out ponds in the Grand Valley near Grand Junction. A total of 32,446 juvenile razorback
17