Sturgeon chubs have been collected from 14 states, all of which border the Missouri
or lower Mississippi rivers. In North Dakota, numerous sturgeon chubs were documented
during a field survey of the Little Missouri River in 1976 and 1977. However,
in recent years only the Yellowstone River has produced any of these species.
Sturgeon chubs inhabit large, turbid rivers with strong current and gravel/sand
substrate. They appear in gravel riffle sites in greatest abundance.