7785

• UCREFRP Catalog Number: 7785
• Author: Thompson, J. M.
• Title: The Role of Size, Condition, and Lipid Content in the Overwinter Survival of Age-0 Colorado Squawfish.
• USFW Year: 1989.
• USFW - Doc Type: Colorado State University,
• Copyright Material: NO

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5

Table 1. Mean total lengths of age-O Colorado squawfish in
reaches 1 (river kilometers 0-177) and 2 (river
kilometers 226-274) of the Colorado River 1982-
1988. River kilometers measured upstream from the
confluence of the Green and Colorado Rivers (river
kilometer 0). Age-O fish were considered to be
those ~ 65 mm total length at time of capturea.

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Year Date Reach n Mean Total Length
(mm)
1982 Late 1 37 29.2
Sept. 2
1983 Early 1 35 27.9
Oct. 2 19 24.8
1984 Early 1 22 24.8
Oct. 2 47 25.8
1985 Early 1 357 27.9
Oct. 2 7 24.0
1986 10/01- 1 193 27.9
10/06 2 32 24.6
1987 09/24- 1 176 40.4
09/27 2 13 27.0
1988 09/20- 1 192 44.2
10/02 2 1 32.0
adata collected by U.-S. Fish and wildlife Service (Colorado
River Fishery Project), Grand Junction, Colorado.