The white sucker (Catostomus commersonii)[1][2][3] is a species of freshwater cypriniform fish inhabiting the upper Midwest and Northeast in North America, but it is also found as far south as Georgia and as far west as New Mexico.

The fish is commonly known as a "sucker" due to its fleshy, papillose lips that suck up organic matter and aufwuchs from the bottom of rivers and streams.

[4] The white sucker is a long, round-bodied fish with a dark green, grey, copper, brown, or black back and sides and a light underbelly.

[6] Generally, the white sucker is found in small streams, rivers, and lakes in the Midwest and East Coast of the United States.

Larger predatory fish species such as walleye, trout, bass, northern pike, catfish, muskellunge, and sauger naturally prey on the white sucker.