The mountain shiner (Lythrurus lirus) is species of freshwater ray-finned fish belonging to the family Leuciscidae, the shiners, daces and minnows. The species can be found in drainages within Virginia, Alabama, Tennessee and Northwestern Georgia. In addition, the species is nearly restricted to the Coosa River system above the Fall Line in the Alabama River drainage. The environment of the species is fresh benthopelagic water, and it lives in a temperate range from 38°N-33°N. Lythrurus lirus typically prefers clear flowing creeks and/or small rivers. These waters typically have moderate gradients and bottom materials that range from sand-gravel to rubble-boulders. The population of this species is represented by large subpopulations and locations. However, while the total adult population is not known specifically, it is speculated to be large. The normal length of the species is typically 6 cm but it has been recorded that the maximum length to be 7.5 cm, which was a male. The peak of their mating season is between the months of May and June.

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