Neon Tetra Care Guide: Tank Setup, Water Parameters & Tank Mates

Neon Tetra Care Guide: Tank Setup, Water Parameters & Tank Mates

Introduction

The Neon Tetra (Paracheirodon innesi) is one of the most iconic and widely kept freshwater fish in the hobby — and for good reason. Their brilliant red-and-blue stripe makes them a showpiece in planted and community aquariums alike. Whether you're a first-time fishkeeper or building out a species-specific biotope, this guide covers everything you need to keep Neon Tetras thriving.

At Concrete Blonde Aquatics, we carry several varieties including the classic Neon Tetra, the deeper-bodied Black Neon Tetra, and the slender Green Neon Tetra — all aquacultured or wild-caught from reputable sources.

Quick Stats

  • Scientific name: Paracheirodon innesi
  • Adult size: 3–4 cm (1.2–1.5 in)
  • Lifespan: 5–10 years with proper care
  • Minimum tank size: 40 L (10 gal) for a school of 6+
  • Temperament: Peaceful, schooling
  • Difficulty: Beginner

Water Parameters

Neon Tetras originate from the soft, acidic blackwater streams of the Amazon basin. Replicating those conditions will bring out their best colour and extend their lifespan.

  • Temperature: 22–26°C (72–79°F)
  • pH: 6.0–7.0 (ideal: 6.5)
  • Hardness (GH): 1–10 dGH
  • Ammonia / Nitrite: 0 ppm (zero tolerance)
  • Nitrate: < 20 ppm

Tip: Winnipeg tap water tends to be alkaline and hard. Use a pH buffer or RO/DI water blended with tap to hit the target range. Weekly 20–25% water changes are recommended.

Tank Setup

Neon Tetras thrive in a heavily planted aquarium with subdued lighting and dark substrate. Driftwood and leaf litter (Indian almond leaves or catappa) will naturally lower pH and mimic their native environment.

  • Substrate: Dark fine sand or aquasoil
  • Plants: Java fern, Amazon sword, hornwort, or floating plants to diffuse light
  • Filtration: Sponge filter or low-flow HOB — Neons dislike strong currents
  • Lighting: Medium to low; 8–10 hours per day

School Size

Neons are obligate schooling fish. A minimum of 6 individuals is required; 10–15 is ideal. Smaller groups lead to stress, washed-out colour, and increased disease susceptibility. Their synchronized schooling behaviour is also one of the best visual effects in the freshwater hobby.

Diet

Neon Tetras are micro-predators in the wild, feeding on tiny invertebrates and zooplankton. In the aquarium, offer a varied diet:

  • High-quality micro pellets or crushed flake as a staple
  • Frozen or live baby brine shrimp (2–3x per week)
  • Daphnia or micro worms as enrichment

Feed small amounts 1–2 times per day — only what they consume in 2–3 minutes.

Compatible Tank Mates

Neon Tetras are docile and must be kept with equally peaceful species. Good community options include:

Avoid: Angelfish, bettas, and any predatory cichlids — Neons are a natural prey item for many larger fish.

Common Health Issues

Neon Tetra Disease (NTD) is the most serious threat — caused by the microsporidian parasite Pleistophora hyphessobryconis. Symptoms include colour fading starting at the blue stripe, curved spine, and cysts visible through the body wall. There is no effective cure; affected fish should be removed and euthanized to prevent spread. Purchase from reputable sources and always quarantine new arrivals for 2–4 weeks.

Other common issues include ich (white spot) and bacterial infections, both triggered by poor water quality or temperature fluctuations.

Ready to Add Neon Tetras to Your Tank?

Browse our available stock — all livestock is inspected and held in our Winnipeg facility before sale:

Or explore our full Freshwater Fish collection for compatible tank mates and schooling species.

Questions? Our team is happy to help — reach out via e-mail or visit us in Winnipeg.

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