Gertrudae Rainbow

Overview

The Gertrudae / Spotted Blue-eye Rainbow (Pseudomugil gertrudae) is a tiny, active rainbowfish from Australia/New Guinea. Males display striking blue eyes and yellow fins. Ideal for nano planted tanks.

Water Parameters

• Temperature: 22–28°C (72–82°F)
• pH: 6.0–7.5
• Hardness: 4–12 dGH

Tank Setup

• Minimum tank size: 30 litres for 8+
• Decor: Dense planting with floating cover; they are active and need room

Diet

• Base: Micro flake, crushed granules
• Treats: Micro worms, daphnia, baby brine shrimp

Temperament & Tank Mates

• Temperament: Peaceful, active schooling fish
• Best companions: Other nano fish, dwarf shrimp, snails
• Schooling: Minimum 8

Common Issues

• Very small — need appropriately sized food
• Males display constantly — visually rewarding
• Lifespan: 2–3 years