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Neon Tetra · Cardinal Tetra
Glowing school of ten — a living light show
Ten neon tetras schooling through plants under soft light is pure calm. Peaceful, tiny, and undemanding in a cycled 10-gallon tank — keep at least 8–10 for natural behaviour.
Photo: Wikimedia Commons / Holger Krisp / CC BY 3.0
Care guide last reviewed: · Care requirements referenced from veterinary and humane standards.
10-gallon cycled, planted community tank; school of 8–10.
Virtually silent (1/5)
Highly independent — comfortable alone 8+ hours
Thrives with daily company
Curated starter supplies researched for this companion's specific anatomy and needs
Neon tetras have tiny, delicate mouths and cannot swallow standard pellets; slowly descending micro-spheres provide multi-tier water column feeding.
Originating in acidic Amazon tributaries, neon tetras require mild tannins to gently soften water, lower pH, and protect against fungal bacterial infections.
Tetras need planted aquatic environments to feel secure; broad-spectrum 6500K LED illumination promotes lush plant growth and highlights neon stripes.
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