2 literature references:

Author: Nelson, J.S., E.J. Crossman, H. Espinosa-PĂ©rez, L.T. Findley, C.R. Gilbert, R.N. Lea and J.D. Williams
Year: 2004
Title: Common and scientific names of fishes from the United States, Canada, and Mexico.
Source: American Fisheries Society, Special Publication 29, Bethesda, Maryland.
Author: International Union for Conservation of Nature and Natural Resources (IUCN)
Year: 1990
Title: 1990 IUCN red list of threatened animals.
Source: IUCN, Gland, Switzerland and Cambridge, U.K. 288 p.