9449

• UCREFRP Catalog Number: 9449
• Author: Hawkins, J. A.
• Title: Recapture and growth rates of three Colorado River endangered fish species
• USFW Year: 2003.
• USFW - Doc Type: a comparison between electrofishing and non-electrofishing.
• Copyright Material: NO

non-electrofishing gear types have similar effects on these species. The use of each
gear should continue when appropriate and used carefully for the collection of
endangered fishes in the Upper Colorado River Basin.
CONCLUSIONS
Recapture rates of humpback chub and Colorado pikeminnow initially captured
by electrofishing were similar to rates of fish initially captured by
non-electrofishing gears.
Growth rates of Colorado pikeminnow, humpback chub, and razorback sucker
were similar for fish initially captured by electrofishing or non-electrofishing
gears.
RECOMMENDATIONS
Continue to use electrofishing when required and appropriate for endangered
fish sampling.
Ensure electrofishing equipment is configured and operating properly.
Establish standard protocols and provide frequent training of field crews in
netting, electrofishing, and fish handling techniques that reduce stress and injury
to fish.
Follow tagging and data reporting protocols to ensure accurate and reliable data.
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