The Neon Tetra is one of the most recognizable and popular fish in the freshwater hobby, famous for its bright, iridescent blue and red stripes.
Neon Tetra Care Guide
Tank Setup and Water Parameters
Neon Tetras are relatively hardy but are sensitive to unstable conditions, making a fully cycled and mature tank essential.
- Minimum Tank Size: 10 gallons is the minimum for a small school, but 20 gallons is preferred for stability and swimming space.
- Schooling: They are shy and stressed when alone. Always keep a school of at least 6-10 Neon Tetras; more is better to see their natural behavior.
- Temperature: Stable tropical temperatures: 72°–78° F (22°–26° C).
- pH Level: Slightly acidic to neutral water is ideal, with a pH of 6.0 to 7.0. They are not as tolerant of highly acidic water as their cousin, the Cardinal Tetra.
- Water Hardness: Soft to moderately soft water (up to 10 dGH).
Habitat and Environment
Mimicking their shaded, Amazonian streams helps them thrive and intensifies their colors.
- Lighting: They prefer subdued lighting. Use live or floating plants (like Water Lettuce or Frogbit) to diffuse overhead light.
- Decor: Use a dark substrate (like black sand) to enhance their stripes. Add plenty of cover using dense live plants, driftwood, and rocks to create hiding spots and break up sight lines.
- Filtration: A good filter (sponge or HOB with low flow) is necessary. Ensure the filter intake is covered with a sponge, as these small fish can be sucked in.
Diet and Feeding
The Neon Tetra is an omnivorous micropredator in the wild.
- Staple Diet: High-quality micro-pellets or small flake food are suitable.
- Supplementation: Their health and coloring benefit greatly from a varied diet. Supplement their flakes with:
- Frozen or live Brine Shrimp
- Frozen or live Daphnia
- Small, crushed Freeze-dried Bloodworms
- Feeding Schedule: Feed small amounts 2-3 times per day—only what they can consume in under two minutes.
Compatibility
Neon Tetras are peaceful and do well in community tanks with other non-aggressive, similarly sized fish.
- Good Tank Mates: Corydoras catfish, Otocinclus, Rasboras (Harlequin or Chili), Dwarf Gourami, and other small, peaceful Tetras.
- Avoid: Large Cichlids (like full-grown Angelfish), aggressive barbs, or any fish large enough to eat a small Neon Tetra.





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