English: This sport inhabits fast till moderate flowing creeks in mountainous areas (about 1200 meters) and some cenotes which are parts of the Rio Tamasi drainage (state of San Luis Potosi, eastern Mexico).
This Xiphophorus species, they're also known as "Nezzies" and "Mountain swordtail". The name "Nezahualcoyotl" means "hungry coyote". And this strain was named after an Acolhuan philosopher, ruler and warrior by the name of Acolmiztli Nezahualcoyotl (☼1402 - †1472). But the species itself was described in 1990 while the first specimens of this swordtail species was imported in 1913. This had to do with the fact that this species was thought to be a variety of the Xiphophorus montezumae.
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