Genus Catostomus refers to a group of freshwater fish commonly known as suckers. While Catostomus is the scientific name, other synonymous terms that can be used to refer to these fish include the name "buffalo fish", as well as "carp suckers" and "redhorse fish". Suckers typically live near the bottom of streams and rivers across North America and are known for their round, sucker-like mouths that they use to feed on algae, small aquatic creatures, and debris. Some of the most commonly known species in the Catostomus genus include the longnose, white, and smallmouth buffalo fish.