The longnose sucker is a freshwater fish found primarily in North America. It is known for its elongated snout, which helps it feed on small invertebrates and algae on the riverbed. This species typically inhabits rivers and streams with clean, gravelly substrates. Longnose suckers can grow up to 30 inches in length and are recognized by their slender bodies and large, flat mouths. They play an important role in their ecosystems by helping to maintain the health of aquatic habitats. Conservation efforts are in place to protect their populations from habitat degradation and pollution.