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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 Longnose Sucker on FishExplorer
Rivers with Longnose Sucker on FishExplorer
Arkansas River Below Pueblo Reservoir
Colorado River Byers Canyon to Kremmling
Colorado River Pumphouse to Dotsero
Gunnison River (Gorge/Black Canyon)
South Platte - Deckers
Yampa River - Steamboat to Hayden

1 rivers were found with Longnose Sucker that have incomplete research and may not be active, but are listed. Log in or create a free account to view the rest of the list of rivers with Longnose Sucker.
Longnose Sucker
The longnose sucker is widely distributed throughout North America. Its range is similar to the white sucker.  This is the only sucker located in Alaska and Asia. It is found where temperatures are usually cold and the waters clear.  Longnose are usually found in similar areas as white suckers, although they seem to be more adaptable to streams with moderate to high flow velocities.
Longnose suckers are reddish-brown to dark brassy green on the upper body.  They can also be shades of gray to black and their belly is usually white. During spawn they develop a broad lateral band that is red in color. This sucker’s body is elongated and cylindrical.  The head tapers into a long snout that overhands the mouth. Their mouth has large lips lined with small fleshy projections called papillae. The tail is forked with rounded lobes. Longnose suckers can reach lengths of two feet.
Spawning occurs from late spring to early summer.  Preferred spawning sites are streams with gravel bottoms and cold water. However longnose suckers do not build nests, rather the fertilized eggs fall into crevices in the gravel. They typically spawn during daylight.   The yellowish eggs take about two weeks to hatch. Longnose suckers reach sexual maturity around two to three years.
Primarily bottom feeders, longnose swim slowly along the bottom in search of invertebrates.  Sometimes they feed on aquatic plants, algae and fish eggs.

Longnose Sucker in Colorado

This is an elongated, cylindrical sucker; head tapering into a long snout overhanging the mouth; mouth ventral, no notch or indentation at lateral connection of upper and lower lips, thick upper lip with 5-8 rows of papillae, median indentation of lower lip complete; dorsal fin not falcate with 10-12 rays; scales are small in size, crowded near head, larger near the tails; more than 90 scales along lateral line. Adults are generally dark, olive, or grey on the back shading to white on the ventral surface. During spawning periods, males and females develop a broad lateral band that is wine red in color. Young are dark tan in color.Longnose reach a length of 9 inches in two years. Maximum length can be 30 inches and the fish may weigh several pounds (Beckman 1952).

Range in Colorado
In Colorado, the species is native to the East Slope. Introduction to West Slope waters has expanded the range of the longnose sucker. As with the white sucker, the longnose has replaced and hybridized with species native to the West Slope.

Common in both lakes and streams, the longnose is found in warm and cold waters. In the South Platte River, longnose suckers are usually found in the same areas as white suckers (Propst 1982). Although found in both pool and riffle areas, longnose suckers are apt to be in waters near areas of moderate to high flow velocities.

Courtesy of Natural Diversity Information Source, CDOW

Colorado State records for sucker

Kept                    23.25 inches, 4 lb 5.5 oz
Released          open

Master Angler minimum qualifying length is 18 inches

Most Recent Longnose Sucker Forum Posts
Suckers in the canyon? 06.26.21 by Bubba02STi
Suckers in Dillon 08.14.20 by The Master Baiter
Spawning suckers 04.12.17 by trouty
Sucker trapping help 03.09.17 by malty falcon
How to trap suckers? 11.23.15 by malty falcon
First Time Fishing Deckers 02.06.13 by Carp Crazy
Can't even catch suckers... 04.03.12 by FishingJunkie
Sucker fish in denver area 11.21.11 by ugly1257
Longnose Sucker Articles, Blogs, & Podcasts
Blog: Anti-Troutite, not really 03.14.21 by Jeff Wagner
Blog: Fifteen, But Who’s Counting? – Oh, I Am! 10.17.14 by David Coulson
Blog: Boomerang Tool Co. Grip 11.07.12 by Joshua Christensen
Blog: 4 Apps Every Angler With A Smartphone Should Use 02.09.12 by Joshua Christensen
Blog: Clouser Pattern Detailed - New Article 12.16.11 by Matt Snider
Blog: Become a pro 09.30.11 by Joshua Christensen
Blog: Launches California 09.27.11 by Matt Snider
Blog: California now on 09.23.11 by Matt Snider
Recent Colorado Longnose Sucker Photos by Fish Explorer Members
by Hobbsmotorsports - by Florida Bassman - More like a 155lb.sucker. MYSELF. by MrDonamick - sign of a healthy creek,( CATCH & RELEASE ) 20 1/2" by Fishin4Jesus - Was surprised when this started pulling hard on my 7ft 3wt Fly rod. by Crewser - 9" sucker by MrDonamick - by Fish_ Anytime -
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