Abstract of Smith, G.R., J.G. Hall, R.K. Koehn, and D.J. Innes. 1983. Taxonomic relationships of the Zuni Mountain sucker, Catostomus discobolus yarrowi. Copeia 1983(1):37-48.

Morphometric and biochemical methods demonstrate that the zuni mountain sucker is the product of hybridization between the Colorodo River mountain sucker and the Rio Grande mountain sucker.