Surveys from 1990 through 1992 resulted in a significant range extension of the paleback darter, Etheostoma pallididorsum, which is endemic to the Ouachita Mountains. Prior to 1990, it had only been collected in the upper Caddo River drainage and a tributary to the Ouachita River below Lake Ouachita. The collections that extended this darter's range occurred in tributaries of the Ouachita River above Lake Ouachita.
Pardew, Mitzi G.; Cochran, Betty G.; and Posey, William R. II
"Range Extension of the Paleback Darter,"
Journal of the Arkansas Academy of Science: Vol. 47
, Article 22.
Available at: http://scholarworks.uark.edu/jaas/vol47/iss1/22