Humpback chub will be considered for "down-listing" to threatened when five viable, self-sustaining populations have been located or restored. The species will be eligible for removal from the endangered species list when the five populations have been restored and when the fish's habitat has been protected.
www.fws.gov/coloradoriverrecovery/Crhbc.htm
Humpback chub - Wikipedia, the free encyclopedia
The humpback chub Gila cypha , is a federally protected fish that lived originally in fast waters of the Colorado River system in the United States. It takes its name from the prominent hump between...
en.wikipedia.org/wiki/Humpback_chub
Humpback Chub; Gila cypha ... Humpback chubs are found to be concentrated in such river areas, and not found in other habitat types. Conversely, exotic and other native species are not normally found in humpback habitats, (Valdez et al.
ndis.nrel.colostate.edu/wildlifespx.asp?SpCode=010631
Historically, the humpback chub inhabited canyons of the Colorado River and four of its tributaries: the Green, Yampa, White and Little Colorado rivers. Now, there are only two populations in the Upper Colorado River drainage. ... Threats to the humpback chub include flow regulation, habitat loss and alteration,
nativeecosystems.org/species/fish/humpback-chub nativeecosystems.org/species/fish/humpback-chub
A 15 feet (5 m) waterfall located a few hundred yards (meters) above the Colorado River isolates acceptable humpback chub habitat from non-native predator fish in the mainstem Colorado River.
www.nps.gov/grca/naturescience/shinumotransloc.htm
mm TL) habitat use and geomorphic differences; and (3) determine how discharge, during base flow conditions, was related to subadult humpback chub habitat ...
doi.wiley.com/10.1002/(SICI)1099-1646(199805/06)14:3%3C... doi.wiley.com/10.1002/(SICI)1099-1646(199805/06)14:3%3C267::AID-RRR501%3E3.0.CO%3B2-5
Description: The humpback chub is a remarkable member of the minnow family that is green to silver and white with an abrupt hump behind the head. They grow to about 18 inches in length. ... Habitat: The humpback prefers deep, fast-moving, turbid waters often associated with large boulders and steep cliffs.
wildlife.state.co.us/WildlifeSpecies/Profiles/Fish/Hump... wildlife.state.co.us/WildlifeSpecies/Profiles/Fish/HumpbackChub.htm
The humpback chub (Gila cypha) is a long-lived, freshwater fish found only in the Colorado River Basin. Physical adaptations—large adult body size, large predorsal hump, and small eyes—appear to have helped humpback chub ... A variety of factors, including habitat alterations and the introduction of nonnative fishes,
pubs.usgs.gov/fs/2007/3113/
; Adult humpback chub (Gila cypha). Photograph courtesy of the Arizona Game and ... This model attempts to account for temperature differences resulting from both ontogenetic habitat shifts between the Little Colorado and the mainstem Colorado Rivers as well as seasonal variation in water temperature within the LCR.
pubs.usgs.gov/of/2007/1402/
Humpback chub habitat may also have been improved as the result of experimen-tal floods conducted in 1996, 1997, 2000, and 2004. Since 2003, water temperatures below the dam have also increased as the result of drought conditions.
www.gcmrc.gov/files/pdf/fs_2006_3109.pdf