![]() ![]() While many tetras have a slimmer, torpedo-shaped profile, the pristella tetra is a deeper-bodied fish that grows up to 2 inches (5 cm) long. For more details, read our complete care guide. If you want to make a visually stunning design, we highly recommend putting them in a fish tank full of green aquatic plants and a red centerpiece fish like a betta fish. Luckily, black neon tetras are very cheap so you can buy a huge group to fill up a larger aquarium. Like all of the animals on this list, you will need to get a school of at least six fish (of the same species) so that they feel safe and protected from potential predators. The 1.5-inch (4 cm) fish has a red eye with a pair of white and black horizontal lines down its body. This underrated fish is one of our absolute favorites to recommend to both beginners and seasoned aquarists because they are so hardy and practically bulletproof. Learn about some of the best-selling tetras at our fish store. African tetras, on the other hand, tend to be larger and more accepting of a wide range of water parameters, so they can be kept in community aquariums with bigger fish. South American tetras are more popular because of their small size and relatively inexpensive price, but they often prefer softer water and lower pH environments. Tetras (also known as characids or characins from the Characidae family) are a staple of the freshwater aquarium hobby because many of them are colorful, peaceful schooling fish that go well in community tanks.
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