Green Neon Tetra (Paracheirodon simulans)

The green neon tetra (Paracheirodon simulans) is a tiny, peaceful freshwater fish from South America that grows to just 0.8 to 1.4 inches (2 to 3.5 cm) and features a brilliant turquoise-blue stripe running from nose to tail.

Quick Care Facts

Size: 0.8 to 1.4 inches (2 to 3.5 cm)

Lifespan: 3 to 5 years

School Size: Minimum of 6, ideally 10 or more

Minimum Tank Size: 15 to 20 gallons (60 to 75 liters)

Diet: Omnivorous micro-predator (nano pellets, micro flakes, baby brine shrimp)

Water RequirementsTemperature: 72°F to 82°F (22°C to 28°C)

pH Range: 4.5 to 6.5 (prefers soft, acidic blackwater)

Water Flow: Gentle filtration with minimal current

Tank Setup and Tank Mates

Aquascape: Best kept in heavily planted aquariums with dark substrate, driftwood, and floating plants to diffuse bright light.

Compatible Mates: Peaceful nano fish like chili rasboras, pygmy corydoras, otocinclus catfish, and dwarf shrimp. Avoid large or aggressive fish that can fit the tetras into their mouths.