The relict dace (Relictus solitarius) is a cyprinid fish of the Great Basin of western North America.

Relict dace coloration is variable, but generally dusky overall, with olive and brassy shades dorsally.

An obvious speckling pattern with patches ranging from brown to green, and yellowish narrow stripes appear on the back and belly.

The variations on the basic cyprinid plan seem to be characteristic of desert fishes evolving in isolation, with the body adapting for midwater swimming in quiet water.

The relict dace occurs in only a handful of habitats in eastern Nevada, all of which were once covered by the prehistoric Lake Lahontan.