A brownish minnow with small eyes. The lower jaw has a flat, shelflike extension used to scrape algae from rocks. Most active during the daytime. Commonly seen “flashing” on the stream bottom in large schools as they feed. These fish leap clear of the water at frequent intervals. When large schools are present, they seem to surface in this manner almost continuously. The closely related largescale stoneroller is similar in appearance and ecology, but is limited to the Ozarks.