From Williams, J.E. 1995. A large-headed chub with dorsal surface of head concave in profile. Eyes are large. Lateral line is obsolescent.
Pharyngeal teeth are uniserial and well-hooked.
All of these habitats comprise approximately 260 ha. Abundance The vast majority of chubs reside in Borax Lake. Lower Borax Lake, which may contain several thousand chubs during wet years, was dry from 1989-91. Borax Lake is a 4.1 ha, shallow lake receiving water from several thermal springs. Water outflows from Borax Lake into surrounding marsh, small pools, and Lower Borax Lake.