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Colorado Fish Species

Arctic Char
Arctic Grayling
Bigmouth Buffalo
Black Bullhead
Black Crappie
Blue Catfish
Bluehead sucker
Bonytail Chub
Brook Trout
Brown Trout
Channel Catfish
Colorado Pikeminnow
Colorado River Cutthroat
Common Carp
Creek Chub
Cutbow Trout
Cutthroat Trout
Emerald Shiner
Flannelmouth Sucker
Flathead Catfish
Flathead Chub
Freshwater Drum
Gizzard Shad
Golden Shiner
Golden Trout
Grass Carp
Green Sunfish
Greenback Cutthroat
Hybrid Striped Bass(wiper/palmetto)
Lake Chub
Lake Trout
Largemouth Bass
Longnose Sucker
Mountain Whitefish
Northern Pike
Orangespotted Sunfish
Rainbow Trout
Redear Sunfish
River Carpsucker
Roundtail Chub
Sacramento Perch
Smallmouth Bass
Snake River Cutthroat
Spottail Shiner
Spotted Bass
Striped Bass
Sunfish (Bream)
Tiger Muskie
Tiger Trout
White Bass
White Crappie
White Sucker
Yellow Bullhead
Yellow Perch
Yellowstone Cutthroat

Lakes with Colorado Pikeminnow on FishExplorer
No lakes with this fish exist in our database.
Rivers with Colorado Pikeminnow on FishExplorer
Colorado Pikeminnow
The Colorado pikeminnow is native to Colorado River basin’s larger rivers.  Its current distribution has been severely reduced to the Upper Colorado River basin of Colorado, Utah, New Mexico, and Wyoming. It is one of the largest minnows in the world, historically reaching six feet and weighing over 100 pounds. It is top end carnivore and a voracious predator. Due to its size and migratory habits its common names included “white salmon.”

Adult pikeminnows prefer medium to large river habitats, including deep strong currents, eddies, runs, and backwaters. Young prefer small, quiet warm backwaters. Due to their migratory spawning, they also require uninterrupted passage.

Colorado pikeminnows are elongated with a pike-like profile.  Their upper body is greenish in color with gold flecks and the underside is whitish. The head is long and slender sporting a large mouth bordered by thick.  While the jaws are toothless, they have teeth located on the gills in the back of the throat that grasp their prey. During spawn the fins may be an orange hue.  A long lived species it can live upwards of 40 years. 

Once the river flows abate in summer, pikeminnow make their spawning runs.  Distances over 200 miles have been documented.  Spawning takes place over gravel riffles, where the eggs are randomly broadcast over the bottom and hatch within a week. The newly hatched larvae then drift down stream to slower moving backwaters. Colorado pikeminnow reach sexual maturity in five to seven years.
Young pikeminnows fed primarily on freshwater shrimp and midge larvae, shifting to insects as they grow.  Ultimately they start feeding on fish, which becomes their primary diet as adults.


Colorado Pikeminnow in Colorado

Courtesy of Colorado Parks and Wildlife

Description: The Colorado pikeminnow, also known as the Colorado squawfish, is the largest North American minnow. These fish have been known to reach six feet in length and 80 pounds in weight. Adult fish may be green-gray to bronze on their backs and silver to white along their sides and bottoms. During spawning, their fins can take on an orange hue.
Range: Historically, the pikeminnow occurred in great numbers throughout the Colorado River system from Green River in Wyoming to the Gulf of California in Mexico. In Colorado, they are currently found in the Green, Yampa, White, Colorado, Gunnison, San Juan, and Dolores rivers.
Habitat: The Colorado pikeminnow thrives in swift flowing muddy rivers with quiet, warm backwaters.
Diet: Colorado pikeminnow are primarily piscivorous (fish-eaters), but smaller individuals also eat insects and other invertebrates.
Reproduction: The species spawns during the spring and summer over riffle areas with gravel or cobble substrate. Eggs are randomly splayed onto the bottom and usually hatch in less than one week.
Endangered status: The Colorado pikeminnow is listed as threatened in Colorado and endangered federally. Dam construction and other water diversion projects along the Colorado River system has contributed to its decline. Dams lower water temperatures and block migration routes, hampering spawning of pikeminnow. The introduction of non-native bait minnows and stocking of predatory game fish species (such as northern pike, largemouth bass, sunfish, and catfish) are suspected to have contributed to their decline as well. Recovery actions are underway to remove non-native fish, construct bypasses around in-stream barriers, and restock pikeminnow into native habitat.
Most Recent Colorado Pikeminnow Forum Posts
Sqauw Fish? 10.04.15 by TrophySeeker
Colorado Pikeminnow Articles, Blogs, & Podcasts
Blog: Does a Species Have a Right to Exist? 08.15.15 by David Coulson
Blog: Fresh Water Drum 07.27.15 by David Coulson
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