Body form is cylindrical, with a long narrow caudal peduncle. They have cycloid scales, a moderately long, slender Page 2 head. They range in color from black, to dusky or dark olive. Natural range is from Siberia to Great Lakes, Colorado and to Idaho. It is found in the Kootenai River system, and has been collected from drainage systems in Pend Oreille and Spokane.
Body is elongate, cylindrical with a moderately long head.
The head is about one-fifth the total length of the fish. The eye is found high on the head and is large. It has a ventral mouth found on a long rounded snout, with thick lips. The lobes of the lower lip are rounded and is partly cleft. They have cycloid scales, and colors range from upper sides mottled and pale brown, to the befly being white to pale yellow.