Does the neon tetra actually glow?

No; its neon-like sheen comes from a reflective, pigment-containing layer in the skin rather than any light-producing organ.

Where do neon tetras come from in the wild?

They are native to acidic blackwater streams in the western and northern Amazon basin, in parts of Colombia, Peru, and Brazil.

How long do neon tetras live?

Wild individuals can live up to about ten years, but aquarium fish typically live only two to three years.

Neon Tetraネオンテトラ

Paracheirodon innesiNE— Not Evaluated

The neon tetra (Paracheirodon innesi) is a small, brightly colored characin native to acidic blackwater streams of the western Amazon basin in Colombia, Peru, and Brazil. Its iridescent blue-and-red stripe is not bioluminescence but comes from a reflective pigment layer in its skin, and the colors fade to gray at night while the fish rests. One of the most popular aquarium fish in the world, it typically lives 2-3 years in captivity, though wild individuals can live up to a decade, and it is listed as Least Concern by the IUCN.

Neon Tetra (reference photo) — Photo: Corpse89 / CC BY-SA 3.0 / Source / cropped

Species Data

Classification: Characiformes / Acestrorhamphidae (formerly placed in Characidae; reclassified in a 2024 phylogenomic revision) Source
Size: Body length about 3–4 cm
Lifespan: Wild: up to about 10 years / captive: about 2–3 years (longer under good conditions)
Diet: Omnivore Omnivorous; besides commercial feed, it readily eats brine shrimp, water fleas, and bloodworms
Distribution: Native to the western and northern Amazon basin in southeastern Colombia, eastern Peru, and western Brazil, preferring acidic blackwater streams. Source
Sources: ja.wikipedia.org en.wikipedia.org

Did You Know?

Its neon-like glow is not bioluminescence; it comes from a reflective, pigment-containing layer in the skin. Source
At night, while the fish rests, its bright blue and red coloring fades to gray or black. Source
About 2 million are sold monthly in the United States alone, making it one of the most widely kept tropical fish in the world. Source

Where to See This Species

Operating facilities registered on this site: Japan 1

Noichi Zoological Park of Kochi PrefectureKochiA 20-minute walk or 13-minute rental-bicycle ride from Noichi Station on the Tosa Kuroshio Railway Gomen-Nahari Line.

Source

Conservation Story

Conservation Status

Not Evaluated (NE)

Sources

ja.wikipedia.org

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FAQ

Does the neon tetra actually glow?: No; its neon-like sheen comes from a reflective, pigment-containing layer in the skin rather than any light-producing organ. Source
Where do neon tetras come from in the wild?: They are native to acidic blackwater streams in the western and northern Amazon basin, in parts of Colombia, Peru, and Brazil. Source
How long do neon tetras live?: Wild individuals can live up to about ten years, but aquarium fish typically live only two to three years. Source
How many operating facilities are registered here?: Operating facilities registered on this site: Japan 1 Source

Books & gear

Source: ja.wikipedia.org en.wikipedia.org