Buenos Aires tetra
An aquarium favourite for over 60 years, the Buenos Aires tetra is a metallic coloured fish, with red tipped fins and a black marking on the dorsal fin. It is also an extremely large tetra, growing to 7 cm. A hardy, inexpensive, and beautiful fish, the Buenos Aires tetra makes a good addition to most freshwater tanks. However, care should be taken as they will nip and chase slower moving fish with long tails and fish with long rays such as gouramis, unless they are in groups of at least five.
An undemanding fish, the Buenos Aires tetra is extremely suitable for the beginner, as it has no special requirements. However it is best kept away from delicate and shy species such as the red-eyed characin due to its boisterous nature. It is a notorious fin nipper and has a tendency to eat aquarium plants.
This fish has a similar diet to most tetras. Regular feeding of flake and dried foods is enough to sustain these lively fish. However vegetable matter is suggested, to vary the Buenos Aires tetra's diet. This fish requires more food than most small aquarium fish.
Best kept in a community tank with standard lighting, this hardy tetra can be kept in a coldwater aquarium as long as the temperature does not drop below room temperature. They thrive happily in temperatures of 62–83 °F (17–28 °C). The Buenos Aires tetra will tolerate pH 5.5-8.5. This is a wider range than most tetras.