The lake chubsucker (Erimyzon sucetta) is a species of freshwater fish endemic to North America, found in the Great Lakes and the Mississippi River basin, as far north as Ontario, Canada, extending south to the Gulf of Mexico. It is mainly found in lakes, ponds, and swamps, rarely in streams.

The fish is an intermediate level consumer that feeds on benthic detritus, specifically on microcrustacea and midge larvae. Its average length is 25.8 cm. E. sucetta reportedly scatters its eggs randomly over aquatic vegetation and submerged grass in ponds or over gravelly areas cleared by males.

While not in acute danger, the chubsucker faces habitat disturbance due to siltation caused by agricultural practices as well as coal ash spills. Its range has declined in Missouri, Arkansas, Ohio, and possibly Tennessee.

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