Green Neon Tetra

Overview

The Green Neon Tetra (Paracheirodon simulans) is a lesser-known relative of the Neon and Cardinal Tetras. It is smaller and displays a more intense, greenish-blue iridescence along its lateral stripe. Found in very soft, acidic blackwater streams of the Amazon basin.

Water Parameters

• Temperature: 22–28°C (72–82°F)
• pH: 4.0–6.0 (strongly prefers acidic water)
• Hardness: 0–4 dGH (very soft)

Tank Setup

• Minimum tank size: 30 litres for a group of 8+
• Substrate: Dark; leaf litter recommended for tannins
• Decor: Dense planting, floating plants, driftwood; dim lighting preferred

Diet

• Base: Micro pellets, crushed flake
• Treats: Micro worms, daphnia, baby brine shrimp
• Note: Very small mouth — food must be appropriately sized

Temperament & Tank Mates

• Temperament: Peaceful, shy schooling fish
• Best companions: Other small tetras (Cardinal, Green Neon), Corydoras pygmaeus, small rasboras, dwarf shrimp
• Avoid: Any fish that could view them as food

Common Issues

• More sensitive than Neon or Cardinal Tetras — stable parameters essential
• Stress easily from bright light or sudden movements
• Lifespan: 2–3 years