The Flame Tetra is one of the oldest tetra species in the aquarium hobby, first imported in the early twentieth century and prized ever since for its glowing red-orange coloration and ease of care. Males in particular display intense fiery hues on the rear half of the body, contrasted by black-tipped fins that give them a dramatic, eye-catching appearance. Females are slightly larger and less vividly colored but still attractive. Native to the coastal river systems around Rio de Janeiro in Brazil, this species inhabits slow to moderately flowing waters with dense vegetation and leaf litter. In the aquarium it is unusually adaptable, tolerating a broad pH range from slightly acidic to neutral and cooler temperatures that many tropical tetras would find uncomfortable. This makes it suitable for unheated tanks in temperate climates. The Flame Tetra is peaceful and active, spending most of its time in the middle water column. It thrives in schools of six or more and pairs well with other small community fish. Occasional fin-nipping can occur in underpopulated groups, so maintaining a proper school minimizes this behavior. Planted tanks with open swimming areas suit it best.
