Roundtail chub

The roundtail chub (Gila robusta) is a species of freshwater ray-finned fish belonging to the familyLeuciscidae, which includes the daces, chubs, Eurasian minnows and related species. This species is found in southwestern North America. It is native to the Colorado Riverdrainage basin, including the Gila River and other tributaries, and in several other rivers. It is part of the "robusta complex", which includes the Gila robusta robusta, G.r. grahami, and G.r. seminuda.