Moderate
Neon Tetra (Paracheirodon innesi)
21–25°C · pH 5–7
£2.99
South American Tetra
206 products available
Schooling tetras from South America — the backbone of community tanks. Cardinal Tetras, Neons, Rummy Noses, and dozens more species.
- Hyphessobrycon(27)
- Hemigrammus(9)
- Nannostomus(6)
- Metynnis(5)
- Moenkhausia(5)
- Paracheirodon(4)
- Myleus(4)
- Gymnocorymbus(4)
- Megalamphodus(3)
- Cheirodon(3)
- Nematobrycon(3)
- Astyanax(3)
- Aphyocharax(3)
- Leporinus(3)
- Inpaichthys(2)
- Colossoma(2)
- Carnegiella(2)
- Pyrrhulina(2)
- Neolebias(2)
- Pristella(2)
- Anostomus(2)
- Inpaichthtys(2)
- Thayeria(2)
- Nannostomus rubrocaudatus(1)
- Prionobrama(1)
- Exodon(1)
- Chilodus(1)
- Chalceus(1)
- Boehlkea(1)
- Crenuchus(1)
- Serrasalmus(1)
- Corydoras(1)
- Copella(1)
- Semaprochilodus(1)
- Axelrodia(1)
- Ctenolucius(1)
- Hydrolycus(1)
- Corynopoma(1)
- Ctenobrycon(1)
- Nannocharax(1)
- Nannobrycon(1)
- Odontocharacidium(1)
- Thoracocharax(1)
- Gasteropelecus(1)
- Tyttocharax(1)
- Hasemania(1)
- Hemmigrammus(1)
Products in South American Tetra
206 products
Moderate
Cardinal Tetra (Paracheirodon axelrodi)
23–27°C · pH 5.5–7 · 60L
£2.54
−40%
Moderate
Super Blue Emperor Tetra (Inpaichthys kerri)
24–27°C · pH 5.5–7 · 68L
£2.99£4.99
Easy
Electric Blue Acara (Andinoacara pulcher) – Neon Blue, 2–7cm Sizes
22–23°C · pH 6.5–8
£6.19
Easy
Neon Red Male Guppy (Poecilia reticulata)
22–28°C · pH 7–8
£3.99
−14%
Red-Blue Colombian Tetra (Hyphessobrycon columbianus)
20–28°C · pH 5–7.5 · 81L
£2.57£2.99
Steveni Blue Neon Peacock Cichlid (Aulonocara stuartgranti)
23–26°C · pH 8–8.6 · 243L
£18.99
Easy
Royal Tetra (Inpaichthys kerri)
24–27°C · pH 5.5–7 · 80L
From £3.99Some sizes on sale
Purple Pencilfish (Nannostomus rubrocaudatus)
24–28°C · pH 4–7 · 81L
£23.99
Easy
Glass Bloodfin Tetra (Prionobrama filigera)
23–27°C · pH 6.5–7.5 · 68L
£3.99
Green Neon Tetra (Paracheirodon simulans)
23–27°C · pH 5.5–6 · 41L
From £2.99Some sizes on sale
Lemon Tetra (Hyphessobrycon pulchripinnis)
22–27°C · pH 6.5–7.5 · 72L
£3.99
Red-Line Tetra (Hyphessobrycon amapaensis)
23–28°C · pH 5–7 · 54L
£7.99
Tucan Fish (Chalceus erythrurus)
22–26°C · pH 6.5–7 · 243L
£14.99
−11%
Advanced
Blackberry Silver Dollar (Myleus sp. "Lamax III")
24–28°C · pH 6–7.5 · 500L
£140.61£157.99
Dwarf Pencilfish (Nannostomus marginatus)
24–26°C · pH 6.5–7 · 41L
£6.99
Bleeding Heart Tetra (Megalamphodus erythrostigma)
23–27°C · pH 6.5–7.2 · 81L
£12.99
Red Phantom Tetra (Megalamphodus sweglesi)
£5.99
Easy
White-Fin Ornate Tetra (Hyphessobrycon bentosi)
23–28°C · pH 5.5–7.5
£5.99
Serpae Tetra (Megalamphodus eques)
20–28°C · pH 5–7.5 · 72L
£2.99
Moderate
Schreitmüller's Silver Dollar (Metynnis hypsauchen)
24–28°C · pH 6–7 · 260L
£7.99
Advanced
Red-Bellied Pacu (Piaractus brachypomus) – Juvenile Size Options
23–28°C · pH 4.8–7.5 · 2550L
£6.99
−10%
Buenos Aires Tetra (Psalidodon anisitsi) – 3.5–5.5cm Sizes
22–27°C · pH 6.5–8
£2.69£2.99
Moderate
Yellow Neon Tetra (Paracheirodon innesi) — Size Options: 1.5–3 cm
21–25°C · pH 5–7
£2.99
Frequently Asked Questions about South American Tetra
How many tetras should I keep together?
At least 6, ideally 10+. Tetras are obligate shoalers and feel stressed or hide constantly in smaller groups. A large shoal shows their natural schooling behaviour and far better colouration — it transforms the look of a community tank.
Are Neon Tetras easier than Cardinal Tetras?
Neons are slightly more tolerant of cooler temperatures (20–25°C) and slightly harder water. Cardinals need warmer water (24–28°C) and softer, more acidic conditions but are often sourced as hardier wild-caught stock. Both need mature, stable tanks.
What size tank do tetras need?
Small tetras like Neons, Cardinals and Ember Tetras are comfortable in a 60–100L with a group of 10. Larger tetras like Congo or Black Widow need 120L+. Tank length matters more than volume — tetras swim horizontally and need open space.
Can I mix different tetra species?
Yes, but each shoal still needs 6+ of its own kind to feel secure. A mix of Neons, Cardinals and Rummy Noses in one larger tank can work beautifully, but they won't school together — each species forms its own group.
Why have my Neon Tetras gone pale?
Pale colour usually signals stress, poor water quality or the onset of Neon Tetra Disease (a parasitic infection). Check water parameters, nitrate levels and temperature stability. Isolate obviously unwell fish to prevent spread and look for white patches or curved spines.