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.)
