8123

• UCREFRP Catalog Number: 8123
• Author: Wydoski, R. S.
• Title: Coordinated Hatchery Facility Plan
• USFW Year: 1994.
• USFW - Doc Type: Need for Captive-Reared Endangered Fish and Propagation Facilities.
• Copyright Material: NO

LIST OF TABLES
Table Title Page

1 Criteria used for identification and characterization of presumptive
endangered fish stocks in the Upper Colorado River Basin. . . . . . . 94
2 Status and trends of the presumptive endangered fish stocks in the
Upper Colorado River Basin . . . . . . . . . . . . . . . . . . . . . . 95
3 Priorities among endangered fish species and among presumptive
stocks within species for inclusion in refugia or broodstock
development in the Upper Colorado River Basin . . . . . . . . . . . . 96
4 Average number and weight of razorback suckers from one paired mating
at the end of each growing season until fish reach sexual maturity. 97
5 Average number and weight of bonytail from one paired mating at the

6 end of each growing season until fish reach sexual maturity . . . . . 98
Average number and weight of humpback chubs from one paired mating
.at the end of each growing season until fish reach sexual maturity. 99

7 Average number and weight of Colorado squawfish from one paired
mating at the end of each growing season until fish reach sexual
maturity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
8 Water flow requirements for indoor hatchery facilities at various
dissolved oxygen levels per pound of food fed daily to fish . . . . . 101
9 Minimum water flow (gallons per minute: gpm) required per pound of
food fed to fish to avoid toxicity of un-ionized ammonia when levels
exceed 0.0125 ppm (parts per million: ppm) . . . . . . . . . . . . . . 102
10 Projected indoor hatchery growth (expressed as a length increase in
inches) for razorback suckers, bonytail/humpback chubs, and
Colorado squawfish . . . . . . . . . . . . . . . . . . . . . . . . . . 103
11 The space and water requirements of indoor facilities to rear one
family lot of razorback suckers. These requirements would be similar
for the other endangered Colorado River fishes. . . . . . . . . . . . 104
12 Summary of numbers and weight of mature endangered fish as well as
space and water requirements to develop broodstocks of all pre-
sumptive endangered fish stocks in the Upper Colorado River Basin 105
13 Summary of species, family lots, numbers and total weight of mature
endangered fish to be used in immediate, minimum broodstock develop-
ment for presumptive stocks in the Upper Colorado River Basin as
part of the Recovery Implementation Program and the space/water
requirements needed to maintain these fish . . . . . . . . . . . . . . 106

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