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Perhaps the most iconic aquarium fish of all time, the Neon Tetra (Paracheirodon innesi) is famous for its radiant blue and red stripes that shimmer like neon lights in any aquarium. Peaceful, hardy, and endlessly beautiful, they make the perfect schooling fish for community tanks of all sizes.
Species: Paracheirodon innesi
Common Names: Neon Tetra
Origin: South America – Amazon Basin, Peru, Colombia, Brazil
Light Requirements: Moderate – subdued lighting enhances colouration
Diet: Omnivorous – quality flakes, micro pellets, frozen or live brine shrimp, daphnia, and bloodworms
Maximum Size: 3–4 cm
Temperament: Peaceful, schooling
Care Level: Easy
Aquarium Setup:
Best kept in aquariums of 40 litres or larger, Neon Tetras thrive in groups of 8 or more. A dark substrate, live plants, and driftwood mimic their natural Amazonian habitat, while floating plants provide security and shade. They prefer gentle flow and open swimming areas to show off their schooling behaviour.
Water Parameters:
Temperature: 22–26°C
pH: 5.0–7.0
Hardness: 1–10 dGH
Growth and Maintenance:
These tetras are hardy and long-lived for their size, often reaching 5–8 years in captivity with proper care. Their colours are most vibrant in slightly dimmed, well-planted aquariums and when fed a varied diet. Healthy schools display coordinated, flashing movements that bring tanks to life.
Care Tips:
✔ Keep in groups of 8–12+ for security and natural behaviour
✔ Provide shaded areas with plants or driftwood
✔ Feed small amounts regularly with high-quality foods
✔ Avoid large water parameter swings—they prefer stability
✔ Combine with other small, gentle fish for peaceful communities
Compatibility:
Excellent community fish. Ideal companions include rasboras, Corydoras, dwarf gouramis, small livebearers, shrimp, and peaceful loaches. Avoid large or predatory fish.
Availability:
One of the most widely available and popular fish in the Australian aquarium hobby. Usually sold as juveniles with colour intensifying as they mature.
Disclaimer:
As live animals, Neon Tetras may vary in size, colour intensity, and markings depending on age, health, and environment.