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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.
In fact, several species, including cardinal tetras, show the adaptive trait of iridescence which may provide lower visibility in a blackwater environment. [ 4 ] Project Piaba started with an ecological baseline study of the region which was conducted in 1989 by a group of researchers and students from the Universidade do Amazonas (UA) and the ...
Paracheirodon tetras reach maximum overall lengths of 2.5 to 5 cm (0.98 to 1.97 in) depending on the species, and are of elongated, tetra shapes. All share a distinctive iridescent blue lateral line, but differ slightly in their other colorations.
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 extent of red coloring distinguishes it from the neon tetra. [ 28 ]
Taxonomy based on Van der Laan 2017 [2] and Nelson, Grande & Wilson 2016. [3]Family Alestiidae Cockerell, 1910. Genus †Alestoides Monod & Gaudant, 1998 Genus †Arabocharax Micklich & Roscher, 1990
Hemigrammus erythrozonus, commonly known as the glowlight tetra, is a small tropical fish from the Essequibo River, Guyana, South America.It is silver in colour and a bright iridescent orange to red stripe extends from the snout to the base of its tail, the front of the dorsal fin being the same color as the stripe.
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.
Where does this statement come from, especially because you indirectly state this to be global? As an aquarist myself I know many breeders who actually prefer wild caught. And most of my my colleagues prefer wild caught cardinal tetra's because of low quality captive-bred specimens. If there is no good reference added soon, I will remove that part.