Xyrauchen texanus és una espècie de peix de la família dels catostòmids i l'única del gènere Xyrauchen.The Taxonomicon
Morfologia Pot assolir 91 cm de longitud total, encara que la seua mida normal és de 50. Hugg, D.O., 1996. MAPFISH georeferenced mapping database. Freshwater and estuarine fishes of North America. Life Science Software. Dennis O. i Steven Hugg, 1278 Turkey Point Road, Edgewater (Maryland), Estats Units.FishBase Snyder, D. E. i R. T. Muth, 1990. Description and identification of razorback, flannelmouth, white, Utah, bluehead, and mountain sucker larvae and early juveniles. Colorado Division of Wildlife Technical Publication No. 38. 152 pp.
Reproducció A la conca inferior del riu Colorado té lloc principalment des de finals del gener fins a l'abril (rarament, fins al maig o el juny), quan la temperatura de l'aigua assoleix 11-21 °C.U.S. Fish and Wildlife Service, 22 de maig del 1990. Proposal to determine the razorback sucker (Xyrauchen texanus) to be an endangered species. Federal Register 55(99):21154-21161.Mueller, G., 1989. Observations of spawning razorback sucker (Xyrauchen texanus) utilizing riverine habitat in the lower Colorado River, Arizona-Nevada. Southwestern Naturalist 34:147-149.Muth, R. T. i J. B. Ruppert, 1996. Effects of two electrofishing currents on captive ripe razorback suckers and subsequent egg-hatching success. North American Journal of Fisheries Management 16:473-476.Tyus, H. M. i C. A. Karp, 1990. Spawning and movements of razorback sucker, Xyrauchen texanus, in the Green River basin of Colorado and Utah. Southwestern Naturalist 35:427-433.
Alimentació Menja algues, crustacis planctònics i larves d'insectes aquàtics. Al llac Mohave (Arizona i Nevada), els adults es nodreixen principalment de crustacis, diatomees, algues filamentoses i detritus.Marsh, P. C., 1987. Digestive tract contents of adult razorback suckers in Lake Mohave, Arizona-Nevada. Trans. Am. Fish. Soc. 116:117-119.Marsh, P. C. i D. R. Langhorst, 1988. Feeding and fate of wild larval razorback sucker. Environ. Biol. Fish. 21(1):59-67.
Depredadors Als Estats Units és depredat per Lepomis cyanellus, Cyprinella lutrensis, Pimephales promelas, Richardsonius balteatus, Ictalurus punctatus i Pylodictis olivaris.FishBase Johnson, J. E. i R. T. Hines, 1999. Effect of suspended sediment on vulnerability of young razorback suckers to predation. Trans. Am. Fish. Soc. 128(4):648-655.Johnson, J. E., M. G. Pardew i M. M. Lyttle, 1993. Notes: Predator recognition and avoidance by larval razorback sucker and northern hog sucker. Trans. Am. Fish. Soc. 122(6):1139-1145.
Hàbitat És un peix d'aigua dolça, demersal, potamòdromRiede, K., 2004. Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Alemanya. 329 p. i de clima temperat (37°N-34°N).
Distribució geogràfica Es troba als Estats Units: històricament, s'estenia a la conca del riu ColoradoWick, E. J., C. W. McAda, i R. V. Bulkley, 1982. Life history and prospects for recovery of the razorback sucker. Pàg. 120-126 "a" Miller, W. H., ed. Fishes of the Upper Colorado River System: present and future. Am. Fish. Soc.Mueller, G., P. C. Marsh, G. Knowles i T. Wolters, 2000. Distribution, movements, and habitat use of razorback suckers (Xyrauchen texanus) in a lower Colorado River reservoir, Arizona-Nevada. Western North American Naturalist 60:180-187.Miller, W. H., H. M. Tyus, and C. A. Carlson, 1982. Fishes of the upper Colorado system: present and future. American Fisheries Society, Bethesda, Maryland. 131 pp.McAda, C. W. i R. S. Wydowski, 1980. The razorback sucker, Xyrauchen texanus, in the Upper Colorado River Basin. U.S. Fish and Wildlife Service Technical Paper 99:1-15.Marsh, P. C. i W. L. Minckley, 1989. Observations on recruitment and ecology of razorback sucker: lower Colorado River, Arizona-California-Nevada. Great Basin Naturalist 49:71-8.Ferriole, Stephen, 1988. Wildlife Resource Information System. Razorback Sucker mapping criteria for the Colorado, Dolores, Gunnison, Green, White, and Yampa Rivers. Final report for CDOW, Grand Junction, Colorado.Behnke, R. J. i D. E. Benson, 1980. Endangered and threatened fishes of the upper Colorado River basin. Bulletin 503A. Cooperative Extension Service, Colorado State University, Fort Collins.McAda, C. W. i Wydoski, R. S., 1980. The razorback sucker, Xyrauchen texanus, in the upper Colorado River Basin, 1974-1976. Technical Papers of the U.S. Fish and Wildlife Service 99.Minckley, W. L., 1983. Status of the razorback sucker, Xyrauchen texanus (Abbott), in the lower Colorado River Basin. The Southwestern Naturalist 28(2): 165-187. des de Wyoming i Colorado (els Estats Units) fins a la Baixa Califòrnia i Sonora (Mèxic),Page, L. M. i B. M. Burr, 2011. Peterson field guide to freshwater fishes of North America north of Mexico. Segona edició. Houghton Mifflin Harcourt, Boston. xix + 663 pp. però actualment només es troba al mateix riu al seu pas pel Gran CanyóDouglas, M. E. i Marsh, P. C., 1998. Population and survival estimates of Catostomus latipinnis in northern Grand Canyon, with distribution and abundance of hybrids with Xyrauchen texanus. Copeia 1998: 915-925. i els llacs Mead, MohaveMarsh, P. C., Pacey, C. A. i Kesner, B. R., 2003. Decline of the razorback sucker in Lake Mohave, Colorado River, Arizona and Nevada. Transactions of the American Fisheries Society 132: 1251-1256.Dowling, T. E., Marsh, P. C., Kelsen, A. T. i Tibbets, C. A., 2005. Genetic monitoring of wild and repatriated populations of endangered razorback sucker (Xyrauchen texanus, Catostomidae, Teleostei) in Lake Mohave, Arizona-Nevada. Molecular Ecology 14: 123-135.Langhorst, D.R. i P.C. Marsh, 1986. Early life history of razorback sucker in Lake Mojave. Final Report to the U.S. Bureau of Reclamation. Arizona State University, Tempe. 24pp. + app. i Havasu, incloent-hi els estats d'Arizona,Minckley, W. L., 1973. Fishes of Arizona. Arizona Game and Fish Department, Phoenix, Arizona. 293 pp. Califòrnia,California Department of Fish and Game (CDF&G), 1990. 1989 annual report on the status of California's state listed threatened and endangered plants and animals. 188 pp.Moyle, P. B., 1976. Inland fishes of California. University of California Press, Berkeley, Califòrnia. 405 pp. Colorado,Tyus, H. M. i C. A. Karp, 1989. Habitat use and streamflow needs of rare and endangered fishes, Yampa River, Colorado. U.S. Fish and Wildlife Service, Biological Report 89(14). 27 pp.Woodling, J., 1985. Colorado's Little Fish: A Guide to the Minnows and Other Lesser Known Fishes in the State of Colorado. Colorado Division of Wildlife, Denver. Nevada, Nou Mèxic,Sublette, J. E., M. D Hatch i M. Sublette, 1990. The fishes of New Mexico. University New Mexico Press, Albuquerque, Nou Mexico. 393 pp. Utah,Karp, C. A. i Mueller, G., 2002. Razorback sucker movements and habitat use in the San Juan River inflow, Lake Powell, Utah, 1995-1997. Western North American Naturalist 62: 106-111.Lanigan, S. H. i Tyus, H. M., 1989. Population size and status of the razorback sucker in the Green River basin, Utah and Colorado. North American Journal of Fisheries Management 9: 68-73.Sigler, W. F. i R. R. Miller, 1963. Fishes of Utah. Utah State Department of Fish and Game, Salt Lake City, Utah, 203 pp.Tyus, H. M., 1987. Distribution, Reproduction, and Habitat Use of the Razorback Sucker in the Green River, Utah, 1979-1986. Transactions of the American Fisheries Society 116:111-116. Wyoming i la Nació Navajo.Division of Natural Resources, Navajo Fish and Wildlife Department, 1995. Endangered Species List for The Navajo Nation.Jelks, H.L., S.J. Walsh, N.M. Burkhead, S. Contreras-Balderas, E. Díaz-Pardo, D.A. Hendrickson, J. Lyons, N.E. Mandrak, F. McCormick, J.S. Nelson, S.P> Platania, B.A. Porter, C.B. Renaud, J.J. Schmitter-Soto, E.B. Taylor i M.L. Warren, Jr., 2008. Conservation status of imperiled North American freshwater and diadromous fishes. Fisheries 33(8): 372-407.Holden, P.B. i C.B. Stalnaker, 1975. Distribution of fishes in the Dolores and Yampa River system of the upper Colorado Basin. Southwestern Naturalist 19:403-412.U.S. Fish i Wildlife Service. 1994. Determination of Critical Habitat for the Colorado River Endangered Fishes; Razorback Sucker, Colorado Squawfish, Humpback Chub, and Bonytail Chub. Federal Register (59) 54: 13374-13400.Marsh, P. C. i Minckley, W. L., 1989. Observations on recruitment and ecology of razorback sucker: lower Colorado River, Arizona-California-Nevada. Great Basin Naturalist 49: 71-78. Lee, D. S., C. R. Gilbert, C. H. Hocutt, R. E. Jenkins, D. E. McAllister i J. R. Stauffer, Jr., 1980. Atlas of North American Freshwater Fishes. North Carolina State Museum of Natural History, Raleigh, Carolina del Nord. i-x + 854 pp.Platania, S. P., K. R. Bestgen, M. A. Moretti, D. L. Probst i J. E. Brooks, 1991. Status of Colorado squawfish and razorback sucker in the San Juan River, Colorado, New Mexico, and Utah. The Southwestern Naturalist, 36(1):147-150.Smith, G. R., 1992. Phylogeny and biogeography of the Catostomidae, freshwater fishes of North America and Asia. Pàgines 778-826 a R.L. Mayden, editor. Systematics, historical ecology, and North American freshwater fishes. Stanford University Press, Stanford, Califòrnia. xxvi + 969 pp.GBIF NatureServe
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