7770

• UCREFRP Catalog Number: 7770
• Author: Trammell, M. A.
• Title: Evaluation of Colorado Squawfish Stocking in Kenney Reservoir, Rangely, Colorado.
• USFW Year: 1991.
• USFW - Doc Type: Colorado State University,
• Copyright Material: NO

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Stocking
Dexter National Fish Hatchery in New Mexico provided Colorado
squawfish eggs to hatchery facilities at Willow Beach, Nevada, where the
squawfish were raised for the stocking program. The initial goal of
150,000 squawfish over three years was not met. A total of 96,597
fingerlings were stocked into Kenney Reservoir. All stocked squawfish
received an internal tetracycline mark and an external batch
identification mark (Table 1).
Table 1. Lengths, weights, and identification marks of Colorado
squawfish stocked in Kenney Reservoir, 1988, 1989 and 1990.

Stock No. Length (TL mm) Weight (4) Batch
date CSF range x range x mark

4/28/88 17,000 49-90 65 1-6 3.0 left pelvic clip
4/26/89 32,000 41-80 58 1-5 2.2 right pelvic clip
5/24/90 32,000 51-101 73 1-10 3.4 red spray mark
8/06/90 1,397 96-141 114 --- 7.0 left pelvic clip
X1,_,/90 14,200 73-172 114 2-30 10.3 yellow spray mark
Total 96 597
Samp]ing
For each sampling method except seining, all fish large enough for
field identification were counted and identified. All fish species
collected in the study and their codes and status are listed in Table 2.
For large seine hauls (high numbers of fish), the total number of fish was
estimated and the relative abundance of each species derived from either
a subsample of the haul, or ratios based on hauls in which all fish were
counted and identified. Species of interest were measured (to the nearest