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Last modified
7/14/2009 5:02:37 PM
Creation date
5/22/2009 12:36:53 PM
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UCREFRP
UCREFRP Catalog Number
9628
Author
Gloss, S. P., J. E. Lovich and T. S. Melis.
Title
The State of the Colorado River Ecosystem in Grand Canyon - A Report of the Grand Canyon Monitoring and Research Center 1991-2004.
USFW Year
2005.
USFW - Doc Type
\
Copyright Material
NO
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<br /> ~ <br />34 The State of the Colorado River Ecosystem in Grand Canyon <br />Table 1. Historical and present relative abundance of fish species in the Colorado River from Glen Canyon to Separation <br />Canyon. P = present, abundance unknown; A = abundant; C = common; LC = locally common; R = rare; and - = not encountered. <br />[Modified from Valdez and Rycl, 1995. Species that are federally listcd as cndangered are indicated by an asterisk (*). Species that are cndemic <br />to the lower basin of thc Colorado Rh'cr but occurred almost cxclusivcly in smallcr strcams or rivers tributary to the mainstcm Colorado Rivcr <br />are indicated by a plus sign (+)] <br /> Species Pre-1850 1958-59 1970-73 1984-86 1990-93 <br />Family: C1upeidae, shads (introduced) <br /> Threadfin shad R C <br />Family: Cyprinidae, minnows <br /> Native <br /> *Humpback chub P R R LC <br /> *Bonytail chub P <br /> Roundtail chub P R <br /> *Colorado pikeminnow P R <br /> Speckled dace P A A A C <br /> Virgin spinedace+ P R <br /> Woundfin+ p <br /> Introduced <br /> Red shiner R A <br /> Common carp C A A A <br /> Utah chub R R <br /> Golden shiner R R R <br /> Fathead minnow A C A LC <br />Family: Catostomidae, suckers (all native) <br /> Bluehead sucker p C C C C <br /> Flannelmouth sucker P C C C C <br /> *Razorback sucker P R R <br />Family: Ictaluridae, bullhead catfishes (all introduced) <br /> Black bullhead C R R <br /> Yellow bullhead R <br /> Channel catfish A C R LC <br />Family: Salmonidae, salmon and trout (all introduced) <br /> Cutthroat trout R <br /> Coho salmon R <br /> Rainbow trout C A A <br /> Brown trout C C <br /> Brook trout C R <br />Family: Cyprinodontidae, killifishes (introduced) <br /> Plains killifish R C R LC <br />Family: Poeciliidae, livebearers (introduced) <br /> Mosquitofish R R LC <br />Family: Percichthyidae, temperate basses (introduced) <br /> Striped bass R R <br />Family: Centrarchidae, sunfishes (all introduced) <br /> Green sunfish C R R R <br /> Bluegill R R R <br /> Largemouth bass R R R R <br /> Black crappie R <br />Family: Percidae, perch (all introduced) <br /> Yellow perch R <br /> Walleye R <br />Total number of species 10 17 18 20 22 <br />
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