The Utah chub, Gila atraria, is a minnow native to parts of Utah, Idaho, and Wyoming. In Utah, the species is native to the Bonneville Basin, and it has been introduced to many other areas, including the Colorado River system. Utah chub are abundant and common in Utah, adapting to a myriad of environmental conditions in numerous lakes and rivers. In fact, Utah chub are so common in some areas of the state, that they can greatly reduce sport fish populations through intense competition for food and space.
Small Utah chub eat primarily zooplankton, whereas larger individuals eat a wide variety of foods, including insects, mollusks, fishes, and plant material. The species spawns in shallow water during the spring and summer, broadcasting eggs over various types of substrate. No parental care is given the eggs, which hatch in about one week.