The plains minnow, Hybognathus placitus, is a small silvery fish native to many rivers of the central United States. The plains minnow is not native to Utah, but it was reported in the San Juan River inflow to Lake Powell, in the southeastern part of the state, in the early 1980s. It is not known if the species still exists in Utah.
The plains minnow eats primarily plant material, but small invertebrates may also be consumed. The species spawns in the spring and summer, broadcasting eggs over sand and silt substrate. No care is given to eggs or young. The plains minnow is a schooling species, most often found in large rivers and streams with sandy substrates.