Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

A Revision of Two Genera of Goodeid Fishes (Cyprinodontiformes, Osteichthyes) from the Mexican Plateau

John Michael Fitzsimons
Copeia
Vol. 1972, No. 4 (Dec. 29, 1972), pp. 728-756
DOI: 10.2307/1442732
Stable URL: http://www.jstor.org/stable/1442732
Page Count: 29
  • Read Online (Free)
  • Download ($12.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A Revision of Two Genera of Goodeid Fishes (Cyprinodontiformes, Osteichthyes) from the Mexican Plateau
Preview not available

Abstract

A taxonomic revision is presented of Characodon and Xenotoca of the Goodeidae, a family of vivaparous fishes that is virtually restricted to the Mexican Plateau. The most recent family classification was based on anatomical characters of the ovary and trophotaeniae; these characters of the two genera were restudied and evaluated here in combination with added "conventional" information on morphological features and new information on karyotypes, courtship behavior, hybridization experiments, and discrimination tests. The distinctiveness of Characodon and Xenotoca is confirmed. The monotypy of Characodon with C. lateralis is supported, but Xenotoca is found to consist of three species: X. variata, the type species of the genus, X. eiseni, a species here withdrawn from synonymy with variata, and X. melanosoma, a distinctive new species described herein.

Page Thumbnails

  • Thumbnail: Page 
728
    728
  • Thumbnail: Page 
729
    729
  • Thumbnail: Page 
730
    730
  • Thumbnail: Page 
731
    731
  • Thumbnail: Page 
732
    732
  • Thumbnail: Page 
733
    733
  • Thumbnail: Page 
734
    734
  • Thumbnail: Page 
735
    735
  • Thumbnail: Page 
736
    736
  • Thumbnail: Page 
737
    737
  • Thumbnail: Page 
738
    738
  • Thumbnail: Page 
739
    739
  • Thumbnail: Page 
740
    740
  • Thumbnail: Page 
741
    741
  • Thumbnail: Page 
742
    742
  • Thumbnail: Page 
743
    743
  • Thumbnail: Page 
744
    744
  • Thumbnail: Page 
745
    745
  • Thumbnail: Page 
746
    746
  • Thumbnail: Page 
747
    747
  • Thumbnail: Page 
748
    748
  • Thumbnail: Page 
749
    749
  • Thumbnail: Page 
750
    750
  • Thumbnail: Page 
751
    751
  • Thumbnail: Page 
752
    752
  • Thumbnail: Page 
753
    753
  • Thumbnail: Page 
754
    754
  • Thumbnail: Page 
755
    755
  • Thumbnail: Page 
756
    756