Other Definitions
tetra (enc)
tetra (dict)
tetra (dict)
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TetraFor the numerical prefix tetra- see Wiktionary. For the encrypted radio network standard TETRA, see Terrestrial Trunked Radio.
A Tetra is any of a number of species of small freshwater fish belonging to the family Characidae and its former subfamily Alestiidae (African tetras). Many of these, such as the neon tetra, are brightly colored and easy to keep in captivity, and extremely popular for home aquaria. The list below is sorted by common name; in a number of cases, the common name is known to be used for different species, depending on country and context. (For instance, the aquarium trade may use a different name for the same species.) Tetra species: Tetras are also the name of a scoring game piece in the 2005 FIRST robotics competition (Triple Play), which were stacked, or 'capped' on top of larger tetrahedron shaped goals.
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