These fish are endangered because of two types of habitat alterations – water developments (dams, reservoirs, diversions) and introductions of … Valued as food by early settlers and miners throughout the basin, wild populations now only occur in rivers upstream of Glen Canyon Dam, Arizona, and are stable or increasing. The Colorado pikeminnow was listed as an Endangered Species by the U.S. Actions being taken to recover the Colorado pikeminnow include: Colorado pikeminnow will be considered eligible for downlisting from “endangered” to “threatened” and for removal from Endangered Species Act protection (delisting) when all of the following conditions are met: In addition to the Colorado pikeminnow, there are three other species of pikeminnow in the United States: the Sacramento pikeminnow, Umpqua pikeminnow and northern or Columbia River pikeminnow. The Colorado pikeminnow is represented by three wild populations residing in the Green River, Upper Colorado River and San Juan River sub-basins. Once abundant and widespread in the basin, its numbers have declined to the point where it has been extirpated from the Mexican part of its range and was listed as endangered in the US part in 1967, a fate shared by the three other large Colorado Basin endemic fish species: bonytail chub, humpback chub, and razorback sucker. The Upper Colorado River Basin is home to 14 native fish species, including the endangered humpback chub, bonytail, Colorado pikeminnow, and razorback sucker. Fish and Wildlife Service under the Endangered Species Act in 1967. Maintain populations in Green River and upper Colorado River subbasins (“no net loss”), Green River subbasin population > 2,600 adults, Upper Colorado River subbasin population > 700 adults, Establish 1,000 age-5+ subadults in San Juan River. Colorado pikeminnow were once abundant in the main stem of the Colorado River and most of its major tributaries in Colorado, Wyoming, Utah, New Mexico, Arizona, Nevada and California. Called the “white salmon” by early settlers due to its migratory behavior, the Colorado pikeminnow has a torpedo-shaped body and a large, toothless mouth. SIZE: The common length of the Colorado pikeminnow is 52.5 cm (20.7 in) with the longest reported length being 180 cm (70.9 in). document.write(today.getFullYear()); These endangered fish are found only in the Colorado River system. The Colorado pikeminnow has been protected under Utah law since 1973. For example, the northern pikeminnow originally evolved in lakes and appears to adapt easily to reservoirs. Our objectives were to (1) evaluate the effects on sperm motility of 24-h storage in Hanks' balanced salt … He reminisced about the fish’s food value. The northern pikeminnow also preys effectively on sport fish, and often becomes the dominant species in reservoirs, despite biologists’ efforts to limit their population size. The young-of-the year colorado pikeminnows tend to congregate into receding backwaters that are formed in late summer. Northern pikeminnow are so prevalent in the Columbia River Basin that they are considered a threat to salmon species. The pikeminnow was given full protection under the Endangered Species act in 1973. The Colorado Pikeminnow (Ptychocheilus lucius) is a species of concern belonging in the species group "fishes" and found in the following area(s): Arizona, California, Colorado, Mexico, Nevada, New Mexico, Utah, Wyoming. The Colorado Pikeminnow is a migratory species that depends on the Colorado River to live. The Green River adult population declined and then increased in the beginning years of this century. After the completion of the dams, the species was unable to … Dexter National Fish Hatchery and Technology Center, Dexter, New Mexico, maintains three separate captive stocks of the Colorado pikeminnow: 1974YC (Yampa River), 1981YC (Green–Colorado rivers), and 1991YC (Colorado River). This program focuses on 4 species of fish: humpback chub, bonytail, Colorado pikeminnow and razorback sucker. “You can see how you cut steaks off that thing,” he said. [Douglas B … The Colorado Pikeminnow and the Razorback Sucker Colorado Pikeminnow. It is an elongated pike-like fish with a dusky-greenish, slender body with gold flecks on the dorsal (upper) surface. //--> Recovery programs that include the Colorado pikeminnow will direct research, management, and monitoring activities and determine costs associated with recovery. Colorado pikeminnow are a migratory species. Us | Site Map, © ... Chuck and other old-timers used to catch these fish in the Upper Colorado River Basin along with Colorado pikeminnow and razorback sucker. Adults feed primarily on fish. The construction of the dams along the river caused distress among these already endangered fish.