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Xiphophorus. Xiphophorus is a genus of euryhaline and freshwater fishes in the family Poeciliidae of order Cyprinodontiformes, native to Mexico and northern Central America. Xiphophorus species can be divided into 3 groups based on their evolutionary relationships: platyfish (or platies), northern swordtails, and southern swordtails.
A male swordtail. The male green swordtail grows to a maximum overall length of 14 centimetres (5.5 in) and the female to 16 centimetres (6.3 in). The name 'swordtail' is derived from the elongated lower lobe of the male's caudal fin (tailfin). Sexual dimorphism is moderate, with the female being larger than the male, but lacking the 'sword'.
The Chiapas swordtail or upland swordtail ( Xiphophorus alvarezi) is a species of livebearing freshwater fish of family Poeciliidae, and genus Xiphophorus. It is, therefore, in the same genus as the common platy and the swordtail. The Chiapas swordtail was discovered and first described by Donn E. Rosen in 1960, along with four other species of ...
Xiphophorus nezahualcoyotl, the mountain swordtail, is a live bearing fish in the family Poeciliidae. [ 2 ] [ 3 ] It is endemic to the northwestern Pánuco River basin in Mexico. [ 4 ] The specific name of this fish refers to the poet, philosopher and emperor of Texcoco , Nezahualcoyotl (1402-1472).
How humans are scaring fish off finding a mate. Jack Guy, CNN. August 7, 2024 at 5:49 AM. Scientists studying squaretail grouper have found that the increasing presence of fishermen in the water ...
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The marbled swordtail (Xiphophorus meyeri) is a species of freshwater fish in the family Poeciliidae. It was endemic to the Rio Salado system (itself a part of the Rio Grande basin) in Coahuila, northeastern Mexico. [4][5] It was restricted to springs, connected creeks and pools in waters with a pH slightly above neutral and temperatures of 16 ...
Zoo Miami shared a video of one of their male lions roaring on Monday, August 19th, but it's probably not the roar you're used to hearing. It's a quiet roar and it's really cool to hear! Make sure ...