of the basin, including Laguna Santa Tecla, it occurs sympatrically with the recent
colonist, C. cyanogutattum. The associated fish fauna of the basin has been
described by Minckley (1969, 1978).
Etymology.—The species is named after Dr. W. L. Minckley of Arizona State
University who has investigated the biota of Cuatro Cienegasfor many years.