7256

• UCREFRP Catalog Number: 7256
• Author: Radant, R. D., et al.
• Title: Colorado Squawfish Investigations - White River, Utah.
• USFW Year: 1983.
• USFW - Doc Type: Salt Lake City, Utah.
• Copyright Material: NO

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males and other radiotelemetered squawfish were present in this area

during July (pers. comm., Harold Tyus 1982, U. S. Fish and Wildlife
Service). It appeared that squawfish spawning occurred at this site in
1982. By mid-September'fish number 3051 had traveled back up the Green
River to RM 205.3 and remained in this vicinity for at least 10 days.
Between 24 September and 24 November, fish number 3051 traveled an
additional 10.5 mi (16.9 km) upstream.
Fish number 3057 was implanted with a radio transmitter on 24 June at
RM 17.2 of the White River (Figure 9). By 1 July this fish had reached
RM 248.1 of the Green River and on 21 July was 5.1 mi (8.2 km) up the
Yampa River, immediately below a confirmed spawning site. It was
inferred that this fish spawned in the Yampa River during the latter part
of July. During August fish number 3057 moved back and forth between the
Yampa and Green rivers. It was last observed on 2 September at RM 349
(approximately 4 mi (6.4 km) above the Yampa River confluence) of the
Green River, indicating it was moving upstream rather than returning
downstream.
Fish number 3093 was the only radiotelemetered squawfish that was
known to have remained in the White River through July (Figure 10). It
remained in the vicinity of its original capture location until 26 July
when it was observed traveling slowly downstream toward the confluence.
While in the White River fish number 3093 remained in the general area
suspected by Miller et ale (1982a) to have squawfish spawning. Addi-
tional sampling in this area failed to provide evidence of any spawning
concentrations; however, fish number 3093 may have attempted or

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