Here is a list of articles in the Tetras category of the Biology portal. Tetras are many species of freshwater tropical fish in the characin family (Characidae) or in the African tetra family (Alestiidae) of order Characiformes. Not all characins are called tetras; this category includes only those fishes commonly called tetras. See Tetra.
The following 62 pages are in this category, out of 62 total.