Smalleye shiner
The smalleye shiner is a species of freshwater ray-finned fish in the family Leuciscidae, the shiners, daces and minnows. It is found only in the upper Brazos River basin of Texas, which includes the Double Mountain Fork [Brazos River|Double Mountain] and Salt forks of the upper Brazos. It became a candidate for federal listing as an endangered species of the United States in 2013.