They will readily accept a variety of foods, including flakes and small pellets. Cardinal tetras are shoaling fish and the larger the number of the individuals the more striking their visual impact will be in the aquarium.Ĭardinal tetras can be kept with many other peaceful fishes, including discus, dwarf cichlids, corydoras catfish, plecos, and many other community fish. These aquascape features will provide shelter and make the fish feel safe. Placement of additional aquarium decorations such as driftwood and rocks is recommended. In aquariums, cardinal tetras will appreciate well-planted tanks with open spaces. They must be kept in groups of at least 6 individuals and preferably more. They will tolerate a wide range of aquarium conditions and are particularly suited for community tanks because of their small size and peaceful temperament. In nature, these fish are often found in tannin-stained and slow-moving waters, seeking shelter among aquatic plants, tree roots, and branches. It is native to the Orinoco River in Venezuela and the northern tributaries of the Rio Negro in Brazil and western Colombia. Care Guide for Cardinal TetraĬardinal Tetras are small characins and belong to the Characidae family. The cardinal and neon tetra look similar but the neon tetra's red coloration extends only about half its body length. A large group of cardinal tetras, and the combination of the iridescent blue and vivid red they display, produces a stunning glittering effect in an aquarium and it is a sight to behold. The cardinal tetra has the striking iridescent blue line which runs across its upper body and the vivid red line running below it. It is a truly beautiful fish and should be on everybody's must-have list. Cardinal Tetra, Paracheirrodon axelrodi, is one of the most famous and popular species in the hobby.
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