Von Rio tetras are small freshwater fish native to Rio de Janeiro in Brazil and commonly kept in aquariums. They are members of the family Characidae and the species Hyphessobrycon flammeus. Von Rio tetras are also known as flame tetras.
Von Rio tetras are sensitive to water quality and environment and show their red and gold coloration most strongly when their conditions are ideal. They prefer South American biotope aquariums with native plants, fish species and driftwood. As schooling fish, Von Rios live in groups of five or more and school tightly in the presence of larger South American fish, such as silver dollar tetras or freshwater angelfish.