The most widespread sucker of northern North America, this species is native to
the eastern slope of Colorado. It has been inadvertently introduced into headwater streams and
impoundments of the Colorado River drainage in Colorado and Wyoming.
It is common in both
lakes and rivers with cold or warm water, often sharing habitat with the white sucker.
Breeding
males and females have a reddish band on the sides of their bodies.
The longnose sucker is
typically a bottom feeder, consuming primarily aquatic invertebrates.
Maximum Length: 20-30
cm (51-76 cm).