7065

• UCREFRP Catalog Number: 7065
• Author: Behnke, R. J. and D. E. Benson.
• Title: Endangered and Threatened Fishes of the Upper Colorado River Basin.
• USFW Year: 1983.
• USFW - Doc Type: Bulletin 503A,
• Copyright Material: NO

or National Wildlife Refuge. This amendment should
facilitate the introduction of endangered species
such as squawfish, humpback and bonytail chubs into
parts of their original range where they no longer
exist because the introduced "experimental popula-
tions" would not be listed as endangered. Vigorous
objection to the introduction of endangered species
into areas where they do not now exist has effectively
limited all stocking of squawfish and humpback chub
to areas where they presently occur. The stocking of
the razorback sucker into three rivers in Arizona
was possible only because this species is not a
federally listed species.
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