X-ray Tetra

Take more than a scan over these x-ray tetras.

  • X-ray tetras are a species of freshwater fish, native to some of the waterways of northern South America including the Amazon region.
  • ‘X-ray tetras’ are also known as ‘x-ray fish’, ‘water goldfinch’ and ‘golden pristella tetra’.
  • The scientific name of an x-ray tetra is Pristella maxillaris, from the family Characidae, the family of characids, and it is the only species of its genus.
  • X-ray tetras are notable for having a mostly transparent body, with their internals a shiny silver-gold colour and fins coloured black, white and yellow.
  • The length of x-ray tetras ranges from 3 to 5 centimetres (1.2 to 2 inches), and they generally have a lifespan of 3-5 years in the wild.
X-Ray Tetra, Fish, Trivia, Ten Random Facts, Transparent, Species, Animal
X-Ray Tetra
Image courtesy of Mike S/Flickr
  • X-ray tetras have a diet that consists of insects, crustaceans and worms, that are scavenged from the bottom of their river and swamp environments and sometimes they feed on aquatic plant material.
  • Female x-ray tetras produce from 300 to 400 eggs at a time during the wet season, which they lay among plants in the water, and the eggs can hatch from 24 hours onwards.
  • X-ray tetras have what is known as a ‘Weberian apparatus’, a group of tiny bones that act as a sound amplifier, and as a result, the fish are able to hear very well, allowing them to speedily move away from predators.
  • X-ray tetras have been popularly kept as fish tank pets, as they are attractive and quite resilient, however they are a schooling fish and as such it is best if they are kept in groups of at least six.
  • The first scientific description of an x-ray tetra dates back to 1894, by American marine biologist Albert Ulrey, though the fish was originally known under different scientific names, including Pristella riddlei.
Interesting Facts About X-Ray Fish, 2016, Buzzle, http://www.buzzle.com/articles/interesting-facts-about-x-ray-fish.html
Pristella maxillaris, 2016, Wikipedia, https://en.wikipedia.org/wiki/Pristella_maxillaris
Pristella maxillaris, 2016, Seriously Fish, http://www.seriouslyfish.com/species/pristella-maxillaris/
X-Ray Tetra, 2016, A-Z Animals, http://a-z-animals.com/animals/x-ray-tetra/
X-Ray Tetra, 2016, About Fish Online, http://www.aboutfishonline.com/articles/xraytetra.html


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