Native fish monitor - Upper Colorado River Endangered Fish ...
Native fish monitor - Upper Colorado River Endangered Fish ...
Native fish monitor - Upper Colorado River Endangered Fish ...
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Illustration 1. Duchesne <strong>River</strong> Total Non <strong>Native</strong> Species Distribution<br />
Non <strong>Native</strong> <strong>Fish</strong> Distribution<br />
Black Bullhead<br />
Black Crappie<br />
Hybrid Sucker<br />
Brown Trout<br />
Channel Cat<strong>fish</strong><br />
Fathead Minnow<br />
Green Sun<strong>fish</strong><br />
Mottled Sculpin<br />
Rainbow Trout<br />
Red Shiner<br />
Smallmouth Bass<br />
Sand Shiner<br />
White Sucker<br />
Illustration 1 demonstrates the distribution for all <strong>fish</strong> from Myton, Utah (RM 42)<br />
to the Green <strong>River</strong> confluence (RM0) in 2009. Smallmouth bass, Channel cat<strong>fish</strong><br />
and White sucker dominate the distribution with 39%, 31% and 15% of the<br />
observed non native <strong>fish</strong>es, respectively.<br />
Smallmouth Bass CPUE and Length Frequency<br />
Both Smallmouth bass juvenile and adult densities were similar values in 2009,<br />
with adult densities slightly higher. CPUE values demonstrated below are from<br />
the entire stream segment (42RM).<br />
Illustration 2. Duchesne <strong>River</strong> CPUE (SMB)<br />
SMB CPUE 2009<br />
9.0000<br />
8.0000<br />
7.0000<br />
6.0000<br />
5.0000<br />
4.0000<br />
3.0000<br />
2.0000<br />
1.0000<br />
0.0000<br />
8.0478<br />
3.8334 4.2382<br />
2009 SMB CPUE<br />
200mm<br />
The majority of Smallmouth bass surveyed in 2009 were within the distribution<br />
range of 100mm to 300mm. (Illustration 3).
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