On The Colorado
ABOUT ARTICLES FORUM RESOURCES GALLERY CROSS

In This Section:   Agencies   |   AMP I   |   AMP II   |   Anthropology   |   Archives   |   Books/Biblios   |   Dam Operations   |   Data   |   Documents   |   Energy   |   Events   |   Fish   |   Floods   |   Geology   |   Graphics   |   History   |   Hydrology   |   Institutions   |   Law of the River   |   Media   |   News/Blogs   |   Oil Shale and Tar Sands   |   Organizations   |   Parks   |   Photos   |   Reports   |   Reservoirs   |   Salinity   |   Science A-O   |   Science P-Z   |   Sediment   |   Solutions   |   Tribes
Fish

Humpback chub. Photo by Randall D. Babb.
Humpback chub. Photo by Randall D. Babb.

The following is a document archive for the native fish of the Colorado River, which have the highest rate of jeopardy toward extinction in the nation. Read article here.

Historically, the native fish fauna of the Colorado River Basin was dominated by the minnow (cyprinids) and sucker (catostomids) families. Of the 34 known native species to the Colorado River basin, 74% are found nowhere else in the world, or endemic.

Threats to these species include streamflow regulation and habitat modification, altered food web, predation by nonnative fish species, parasitism, hybridization with other native fish species, and pesticides, toxins and pollutants. These changes to the river environment have occurred so quickly that the species have been unable to a adapt, so pro-active human intervention is the only hope they have. Since the river is truncated by 83 dams in the upper basin and 10 dams in the lower basin, this loss of genetic diversity will also impede their recovery.

DIGITIZED LIBRARY of Dr. W. L. Minckley. Native Fish Lab. (Most excellent resource library)

SEARCH ENGINE of US Fish and Wildlife Service

DOCUMENTS AND PUBLICATIONS. Upper Colorado River Endangered Fish Recovery Program

Click here to view bibliographies of endangered fish research

Citizen's Guide to NEPA

Section 7 Consultation Handbook

Regulations for implementing the procedural provisions of NEPA 

NEPA 101. Dinah Bear.

Climate Change Effects Proposed Actions Effects On Proposed Actions Under NEPA. Dinah Bear.

BIOLOGICAL OPINIONS/MEMOS by US Fish and Wildlife Service unless specified.

FLOW RECOMMENDATIONS

LISTING IN THE FEDERAL REGISTER

  1. 1994 - Designation of critical habitat in Colorado River Basin
  2. Colorado pikeminnow - March 11, 1967 (32 FR 4001)
  3. humpback chub - March 11, 1967 (32 FR 4001)
  4. bonytail chub - April 23, 1980 (45 FR 27713)
  5. razorback sucker - October 23, 1991 (56 FR 54957)

COLORADO RIVER AND ITS TRIBUTARIES

Colorado River Mainstem

Upper Colorado River

Gunnison River

Dolores River

Green River

Yampa River

Canyonlands (Southeast Utah Group)

Glen Canyon National Recreation Area (Lake Powell)

San Juan River

Grand Canyon  

Lower Colorado River

       Multiple Species Conservation Program

Gulf of California, Delta and Limitrophe

GRAPHICS

INVENTORY

PHOTOS

  1. Colorado squawfish (Ptychocheilus lucius) (photo)
  2. humpback chub (Gila cypha) (photo) (close-up not public domain)
  3. bonytail chub (Gila elegans) (photo)
  4. razorback sucker (Xyrauchen texanus) (photo)

Photos for detailed identification

PRESS

RECOVERY GOALS

 

UPPER COLORADO RIVER RECOVERY & IMPLEMENTATION PROGRAM (RIP)
SAN JUAN RIVER BASIN RECOVERY & IMPLEMENTATION PROGRAM

OTHER

A CHRONOLOGY OF PUBLIC COMMENTS (under construction)

 





Topics

Administrative
History
Legal
Management
Pollution
Public Notices
Recreation
Science



Sponsors

Back of Beyond Books
Canyonlands Watershed Council
Center for Biological Diversity
Charlie Chub
CounterPunch
Five Quail Books
Friends of the Earth
Hero Hatchery
Holiday River Expeditions
Keeper Springs
Living Rivers
New Belgium Brewing Company
O.A.R.S White Water Rafting
Patagonia
Peaceful Uprising
Resource Renewal Institute
River Runners for Wilderness
Save Grand Canyon Again
Save The Colorado
Serena Supplee Gallery
Sheep Mountain Alliance
Steaming Bean Coffee Company
Tom Till Photography
Uranium Watch
Utah Tar Sands Resistance
Wabi Sabi
Waterkeeper Alliance


On The Colorado All content © 2014 On The Colorado Contact UsFollow us on Twitter
  Web Design by eyedandy