The yellow bass (Morone mississippiensis) or barfish, is a species of temperate bass native to the south and midwestern United States. It is an inhabitant of lakes, ponds and areas of large rivers with reduced current such as backwaters and pools. This species can reach a length of  TL though most are only around . The greatest recorded weight for a specimen of this species is and was caught at Morse Reservoir in Indiana. This species is sought after as a game fish.