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The cardinal tetra (above) has more red on the underside than the neon tetra (below). The green neon tetra (P. simulans) and black neon tetra (Hyphessobrycon herbertaxelrodi) are distinct species—the latter belongs to a different genus—and not color varieties. The cardinal tetra (P. axelrodi) is also a similar species, but its greater ...
The type species is P. innesi, the well-known neon tetra, and the Paracheirodon species are among the fishes known as tetras. All species of this genus are native to the Neotropical realm , occurring in the Orinoco and Amazon Basins in northern South America .
The primary host of Pleistophora hyphessobryconis is the neon tetra; however, this parasite demonstrates a broad range of host specificity and has been isolated from numerous species of aquarium fish. [3] P. hyphessobryconis primarily infects the skeletal muscle with no involvement of smooth or cardiac muscle. [2]
Also, its body is slimmer than that of the neon tetra. It grows to a maximum overall length of about 3.5 cm (1.4 in). Like the other Paracheirodon species, the green neon tetra is kept as an aquarium fish, but it is less commonly seen than either the neon tetra or the cardinal tetra. P. simulans is also sometimes called the blue or false neon.
The cardinal tetra is a very popular aquarium fish, but is less widespread than the neon tetra because until recently, it was difficult to breed in captivity. However, many breeders are now producing the fish; in most cases, one can determine if the cardinal tetra is bred or wild-caught due to damaged fins on wild-caught specimens.
Characidae, the characids or characins, is a family of freshwater subtropical and tropical fish belonging to the order Characiformes.The name "characins" is a historical one, [2] but scientists today tend to prefer "characids" to reflect their status as a, by and large, monophyletic group (at family rank).
The black neon tetra (Hyphessobrycon herbertaxelrodi) is a freshwater fish of the characin family of the order Characiformes. It is native to the Paraguay basin of southern Brazil . They are often found in the aquarium trade.
The Costello tetra is a species of characin from the Amazon basin and is found in Brazil and Peru. [1] The specific name comes from Lake Hyanuary in Brazil. [2] Other common names used in English are January tetra and green neon. The name "green neon" is also used for Paracheirodon simulans.