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<br />,11/04/9316:49 fr <br />u. S. FISH AND WILDLIFE SERVICE <br /> <br />SEN CAMPBELL <br /> <br />@012 <br /> <br />'. <br /> <br /> <br />F"lSh & W~dlife Service <br />For more information contact: <br />Public Affair; <br />U.S. Fish and WUdlHe Service <br />Region 6 <br />P.o. Box 25486. OFC <br />Denver, CO 80225 303-236-7904 <br /> <br />Bony tail chub (Gila elegans) <br /> <br /> <br />18 Inches <br /> <br />Status: <br />o listed as endangered by U.S. Fish and Wildlife Service in 1980 <br />o Endangered under Colorado lew since 1976 <br />o listed as 'protected" in Utah since 1974 <br />o On Arizona list of threatened and endangered species since 1975 <br />o Listed liS rllre by C"'ifomie since 1971 <br />o listed as rllre by Nevada since 1969 <br />o Bonytail Chub Recovery Plan approved May 16. 1984; revised September 4. 1990 <br /> <br />Descriotlon: <br />Bony!eil chub have large fins and a streamlined body that becomes thin in front of the tail. This minnow has a <br />gray or olive-<:olored back, silver sides and a white belly. Bonytail can grow to 24 inches or more and have been <br />known !o live nearly 50 years. Bonytail chub are thought to have evolved about 10.000 years ago. The bonytail <br />is the rarest of the endangered fish in the upper Colorado River Basin and is nearly extinct in the wild. <br /> <br />Dist.ibution: <br />Once reponed to be abundant in pans of the upper and lower Colorado River Basin. the bony tail chub is <br />extremely rare. Only a handful have been captured in the last decade. <br /> <br />The most .ecent captures of bonytail chub have occurred in lake Mohave and lake Havasu in the Lower Basin. <br />Other recent captures were in the Yampa River in Dinosaur .National Monument, from the Green River in <br />Desolation 8I1d Gray canyons. on the Colorado River at the ColoradolUtah Border. and at the confluence of the <br />Green and Colorado Rivers upstream of L.ke Powell. Utah. <br /> <br />Habitat: <br />Bony tail chub are thought to spawn during late June and early July in water temperatures around 18 degrees <br />Celsius. No rep.oducing populations are known in the wild. Available information suggests that bony tail chub <br />may use flooded, ponded. or inundated riverine habitllt:s. In reservoirst this fish occupies the open water areas. <br /> <br />Recently, the bony tail chub numbers in Lake Mohave were augmented by introducing the fish in a protected <br />cove_ <br /> <br />11 <br />