The brown bullhead is a species of catfish found primarily in North America. It typically inhabits freshwater environments such as lakes, rivers, and ponds. This fish is characterized by its dark brown to olive coloration, which helps it blend into its surroundings. Brown bullheads can grow up to 14 inches long and are known for their whisker-like barbels around the mouth. These fish are bottom feeders, primarily consuming insects, crustaceans, and plant matter. They are often found in shallow waters and are known for their ability to tolerate low oxygen levels. The brown bullhead is an important species in aquaculture and is popular among anglers for recreational fishing.