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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 Colorado pikeminnow, P. lucius, is the largest member of the genus, ranging from 4–9 lb (2–4 kg) in adult fish with occasional specimens up to 25 lb (11 kg). Historical and anecdotal reports of Colorado pikeminnows nearing 6 feet (1.8 m) in length and 80 lb (36 kg) in weight have been made.
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]
Colorado pikeminnow; N. Northern pikeminnow; S. Sacramento pikeminnow; U. Umpqua pikeminnow This page was last edited on 31 December 2017, at 14:34 ...
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 ]
As climate change bakes the U.S. West and dries up key Colorado River reservoirs, a slew of invasive species is flourishing in warmer waters at the expense of the artery’s native inhabitants.
It was once abundant and widespread in the basin, its numbers and range have declined to the point where it has been listed as endangered since 1980 and 1986 , [1] [3] a fate shared by the other large Colorado basin endemic fish species like the Colorado pikeminnow, humpback chub, and razorback sucker. It is now the rarest of the endemic big ...
Much of the Colorado River's water is used for agriculture. A new study shows 46% of the water that is diverted is used to grow hay to feed cattle.