
Source: Wikimedia Commons
Paracheirodon innesi
The quintessential tropical fish. Beautiful neon blue and red coloring. Stunning when kept in schools. Hardy and beginner-friendly.
The neon tetra (Paracheirodon innesi) is a small freshwater fish native to the blackwater and clearwater streams of the upper Amazon basin in South America. First described in 1936 by ichthyologist George S. Myers, it is one of the most widely kept tropical fish in the world. Its striking coloration — a brilliant metallic blue stripe running along the midline and a vivid red patch covering the rear half of the body — serves as a recognition signal among conspecifics in dark, tannin-stained waters. Growing to about 3–4 cm, neon tetras thrive in soft, slightly acidic water (pH 6.0–7.0) at temperatures of 22–28°C. They are peaceful schooling fish that display their best behavior in groups of ten or more. Compatible with other small, non-aggressive species, they should not be kept with large predatory fish. Omnivorous by nature, they accept a wide range of foods including high-quality flake food and frozen bloodworms. Breeding requires very soft, acidic water and dim lighting; eggs are scattered randomly among fine-leaved plants. Their hardiness, affordability, and stunning appearance make them the quintessential entry-level tropical fish.
Source: Wikipedia (CC BY-SA 4.0)
Origin
blackwater and clearwater streams in the Amazon basin of South America
Lifespan
5-8 years
Size
3-4cm
Temperature
22〜26℃
Omnivore (flakes, brine shrimp)
Sources: FishBase / Seriously Fish
Edited & verified by: br-choku editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
FishBase: CITES Not Evaluated / IUCN Least Concern(2021)。
Sources: FishBase / Seriously Fish / CITES Appendices (Checklist)
Regulations may change. Always verify the latest information with the relevant authorities.
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30cm+ (school of 10+ recommended)
pH 6.0-7.0 slightly acidic to neutral
Compatible with small peaceful species
Watch for neon tetra disease. Quarantine new arrivals
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The ideal temperature for Neon Tetra is 22〜26℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Neon Tetra is 5-8 years. With proper care and nutrition, they can live a long and healthy life.
Neon Tetra typically reaches 3-4cm as an adult. Size may vary depending on care conditions and individual genetics.
Neon Tetra feeds on: Omnivore (flakes, brine shrimp). Aim for a balanced diet with appropriate feeding frequency.
The price of Neon Tetra varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: June 23, 2026