Neon tetra Tetras & Small Schools — Variety Guide
Neon tetra — one of the 12 tetras & small schools varieties owners look up by name.
Neon tetra is one of the tetras & small schools varieties people search for by name. This page covers what owners actually ask about it, then hands you the sourced tetras & small schools care guidance that applies to every variety.
Schooling fish — the rule is six or more, always.
Quick answer: Neon tetra is a variety of tetras & small schools. Everything on this page is tetras & small schools-level guidance — we do not invent variety-specific numbers.
The care below is tetras & small schools-level guidance from our species hub, sourced to Merck Veterinary Manual — Exotic & Laboratory Animals: Aquarium Fish and RSPCA — Aquarium fish advice. It applies to Neon tetra exactly as it applies to every other tetras & small schools variety. We do not publish variety-specific temperament, lifespan or weight numbers that we cannot source.
School size and tank layout
10+ of one species is the floor for real schooling; mixed-species 'schools' do not merge. A 60–90 cm tank (20–40 gal) suits most small tetras. Open mid-water swimming space plus planted edges is the layout they evolved for — dark substrate and subdued light make colors pop and calm them. Cover the top: rummy-nose and others jump when chased.
Water chemistry: soft and stable wins
Most popular tetras come from soft, acidic South American water: pH 6.0–7.0, temperature 23–27°C (74–80°F) for neons and cardinals, zero ammonia and nitrite, nitrate under 20 ppm. Cardinals prefer the warmer, softer end; black skirts and bloodfins tolerate harder tap water. If your tap water is hard and alkaline, choose forgiving species rather than fighting chemistry with additives — stability matters more than any textbook number.
What people ask about Neon tetra
Neon tetra tetra?
This is one of the questions people actually type about neon tetra. The sourced tetras & small schools answer lives in our species hub, linked from this page — the same rules apply to Neon tetra as to any other tetras & small schools variety.
Tetra neon tetra cardinal?
This is one of the questions people actually type about neon tetra. The sourced tetras & small schools answer lives in our species hub, linked from this page — the same rules apply to Neon tetra as to any other tetras & small schools variety.
Neon tetras fish?
This is one of the questions people actually type about neon tetra. The sourced tetras & small schools answer lives in our species hub, linked from this page — the same rules apply to Neon tetra as to any other tetras & small schools variety.
Neon tetras fish food?
This is one of the questions people actually type about neon tetra. The sourced tetras & small schools answer lives in our species hub, linked from this page — the same rules apply to Neon tetra as to any other tetras & small schools variety.
Neon tetra cardinal tetra difference?
This is one of the questions people actually type about neon tetra. The sourced tetras & small schools answer lives in our species hub, linked from this page — the same rules apply to Neon tetra as to any other tetras & small schools variety.
Other tetras & small schools varieties
Cardinal tetra Ember tetra Rummy-nose Black skirt Bloodfin Congo tetra
Sources
- Merck Veterinary Manual — Exotic & Laboratory Animals: Aquarium Fish — verified 2026-10-18
- RSPCA — Aquarium fish advice — verified 2026-10-18