Flannelmouth Sucker


The Flannelmouth ​Sucker (Catostomus latipinnis) is a unique fish species belonging⁣ to the Catostomidae ⁢family.

Conservation Status

The Flannelmouth Sucker is listed as a species of Least Concern by the IUCN Red List.⁣ Conservation efforts focus on preservation ‌of habitat⁤ and water quality, ‌with programs in place to monitor populations and minimize impacts of ‍human activities.


Stat Average Range
Length 30cm 25 – 40cm
Weight 0.5kg 0.2⁣ – 0.8kg
Average Lifespan 10 years Not applicable


The Flannelmouth Sucker is prevalent throughout the ⁣large river systems of‌ the⁣ western United⁣ States. There are no known​ migration patterns for this species.


The Flannelmouth ⁢Sucker prefers ⁢slow-moving freshwater rivers and streams. It resides in a depth range⁤ anywhere from surface level⁢ up to 20 meters, and prefers temperatures ranging from 10 to 25 ‍degrees Celsius.

When and Where to See

The ⁣Flannelmouth Sucker ⁢can typically be ‌observed at the height of summer, with prime viewing occurring at dusk and ​dawn.

Best Fishing Locations

Some prime locations for sighting‌ and fishing the Flannelmouth Sucker include:

1.‌ Colorado River, Colorado
2. ‍Green River, Utah
3. San Juan River,⁢ New Mexico
4.​ Salt River, Arizona

General​ fishing tips include focusing on the deeper, slower-moving parts⁢ of rivers,​ particularly at the edge of‍ eddies where food may accumulate.

How to Catch

The preferred bait ‌for the Flannelmouth ⁢Sucker includes nightcrawlers, ‍small crayfish, ​and fly lures that mimic their food. Common‌ fishing techniques used include fly fishing and bobber‌ fishing. ⁢The best ⁤time ⁣of day for⁢ fishing is early morning or late evening.⁤

Identification Guide

The Flannelmouth Sucker has a distinct shovel-shaped mouth, round​ head, and brown to olive coloration ​on the body. It is distinct from the similar Mountain Sucker due to⁢ its much larger size and broader mouth.


The Flannelmouth ‌Sucker is not typically used for culinary purposes due to its small size ⁣and⁣ bony structure.

Additional Information

The Flannelmouth Sucker is predominantly a ​bottom ‍feeder, relying on algae and small invertebrates⁢ for sustenance. The primary ⁣threat to this species is habitat loss due to ‌human activities. There is ⁤no known significant ‌cultural⁤ or historical‌ significance tied to this⁣ species.

References and Further Reading

For more comprehensive‌ information ⁣about ‌the Flannelmouth Sucker, consider these sources:
IUCN Red List