The razorback sucker (Xyrauchen texanus) is a suckerfish found in rivers and lakes in the southwestern United States and formerly northwestern Mexico. It can grow to 91 cm (3 ft) in length and is recognisable by the keel between its head and dorsal fin. It used to inhabit much of the Colorado River Basin but commercial fishing, river damming, and habitat loss have caused great declines in populations. It is now restricted to the Colorado River upstream of the Grand Canyon and to four reservoirs, Lake Mead, Lake Mohave, Lake Havasu, and Lake Powell.
It usually moves from deep water to suitable spawning grounds to breed, and research into its habits and breeding locations is ongoing. It has been a federally protected fish since 1991 and is rated as "Critically Endangered" by the International Union for Conservation of Nature, and Critically Imperiled by NatureServe. There are some signs of recovery, with fish being observed in the lower Grand Canyon in 2012 and 2013.[3]
^NatureServe (2020) [errata version of 2013 assessment]. "Xyrauchen texanus". IUCN Red List of Threatened Species. 2013: e.T23162A174781799. doi:10.2305/IUCN.UK.2013-1.RLTS.T23162A174781799.en. Retrieved 12 November 2021.
^"Xyrauchen texanus". NatureServe Explorer. 7.1.
^"Tagged Razorback Suckers Released in Grand Canyon" (Press release). Grand Canyon, Arizona: National Park Service. February 24, 2015 [First published April 14, 2014]. Retrieved December 19, 2022.
The razorbacksucker (Xyrauchen texanus) is a suckerfish found in rivers and lakes in the southwestern United States and formerly northwestern Mexico....
a few miles of this same area and offer a more private experience. Razorbacksucker (endangered) Bonytail chub (endangered) Rainbow trout Largemouth bass...
the United States Fish and Wildlife Service are: Blue sucker (Cycleptus elongatus) Razorbacksucker (Xyrauchen texanus) Robust redhorse (Moxostoma robustum)...
concern for the bonytail chub, Colorado pikeminnow, humpback chub, and razorbacksucker, whose critical habitat includes the lower Gunnison River. The Gunnison...
Cahuilla where archeologists found rock fish traps and charred remains of razorbacksucker and bonytail bones. High water lines suggest the basin has filled many...
mcdougallii. Endangered fish in the river include the humpback chub and the razorbacksucker. The three most common amphibians in these riparian communities are...
Juan River, the Colorado pikeminnow (Ptychocheilus lucius) and the razorbacksucker (Xyrauchen texanus), while allowing water development and management...
Sucker Catostomus microps Y Santa Ana Sucker Catostomus santaanae Y RazorbackSucker Xyrauchen texanus Y Shortnose Sucker Chasmistes brevirostris Y Brown Bullhead...
severe declines in the populations of 40 species. The bonytail chub, razorbacksucker, Colorado pikeminnow, and humpback chub are among those considered...
endemic fish species like the Colorado pikeminnow, humpback chub, and razorbacksucker. It is now the rarest of the endemic big-river fishes of the Colorado...
River, the Bonytail chub, Colorado pikeminnow, Humpback chub, and Razorbacksucker, are listed as endangered. During the years of lobbying leading up...
Colorado Basin endemic fish species: bonytail chub, humpback chub, and razorbacksucker. The Colorado pikeminnow is currently listed as vulnerable by the IUCN...
The occupants ate at least four species of fish (two of which were razorbacksucker and bonytail chub), birds (particularly the coot), black-tailed jackrabbit...
and severe declines in the populations of 40 species. Bonytail chub, razorbacksucker, Colorado pikeminnow, and humpback chub are among those considered...
threatened with extinction and protected: the Colorado pikeminnow, razorbacksucker, humpback chub, and bonytail chub. While people are permitted to fish...
Juan River supported native fishes including Colorado pikeminnow, razorbacksucker and roundtail chub, but these have been largely been eliminated in...
McCarthy, Michael S.; Minckley, W. L. (1987). "Age Estimation for RazorbackSucker (Pisces: Catostomidae) from Lake Mohave, Arizona and Nevada". Journal...
that reside in Nevada's waters ranging from the speckled dace to the razorbacksucker. A game warden for the Nevada Department of Wildlife (NDOW), has been...
endangered since the dam was completed, including humpback chub and razorbacksucker. Some dam projects, such as those on the Salt River Project in Arizona...
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