Following is a brief discussion of each of these species. First, is the Utah Sucker, Catostomus ankna. Body form is elongate, with cycloid scales and rounded anteriorly. They have an inferior mouth, weak lips and are without lateral notches. They have a short broad head, with small eyes.
Dorsal fin have eleven to thirteen rays with a short but broad caudal fin.
They range in color from dark gray, to bronze to whitish with dark fins. The Utah Suckers native range is the basin of Old Lake Bonneville of Utah and Idaho. They are also found in Wyoming and Nevada. They can also be located in the Snake River drainage, and the Bear River drainage. Body form is cylindrical, with a long narrow caudal peduncle.