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The Colorado Pikeminnow was once a species of fish that resided in much of the Colorado River Basin. Due to human impacts and the introduction of non-native fish species, the population has receded to the upper basin. According to the Native Aquatic Species Conservation in Arizona, the installation of dams has altered the fish's movement. [9]
The species is near extinction in its native Colorado River Basin habitat, due to extensive habitat destruction. On the Columbia and Snake rivers from approximately May through September anglers are paid for each northern pikeminnow that they catch (from within program boundaries) that is 9 inches (23 cm) or larger in total length, and the more ...
Twenty-three native species are threatened or endangered at either the federal or state level. [2] [3] [4] The federally endangered species are the Humpback Chub (Gila cypha), Bonytail (Gila elegans), Colorado Pikeminnow (Ptychocheilus lucius), and Razorback Sucker (Xyrauchen texanus). [5]
The San Juan River Basin Recovery Implementation Program or (SJRIP) is a river management project that was established to recover two endangered fish species in the San Juan River, the Colorado pikeminnow (Ptychocheilus lucius) and the razorback sucker (Xyrauchen texanus), while allowing water development and management activities to continue in the San Juan River Basin.
Selenium and mercury contribute to concerns about conservation of resident biota. Four fish species - the humpback chub, bonytail chub, Colorado pikeminnow, and the razorback sucker - are endemic to the region. [14] [15] Critical habitat for these species includes the lower Gunnison River. [16]
The Northern pikeminnow, Columbia River dace or colloquially Squawfish (Ptychocheilus oregonensis) is a large member of the minnow family, Leuciscidae. [2] This predatory freshwater fish is native to northwestern North America, ranging from the Nass River basin to the Columbia River basin. [ 2 ]
Four species of fish native to the Colorado River basin are in danger of becoming extinct: the Colorado pikeminnow, the razorback sucker, the bonytail, and the humpback chub. The goal of the program is to stem further reductions in numbers of these species and, eventually, to create self-sustaining populations, while water development proceeds ...
The San Juan River provides habitat for at least eight native fish species – cutthroat trout, roundtail chub, speckled dace, flannelmouth sucker, bluehead sucker, mottled sculpin, Colorado pikeminnow, and razorback sucker, with a possible ninth, bonytail chub. [8]