Forktail Blue-eye

Forktail Rainbowfish (Pseudomugil furcatus)

Also known as the Forktail Blue-Eye

A small and lively blue-eye rainbowfish from the rainforest streams of eastern Papua New Guinea. Known for its bright blue eyes and vibrant yellow fins that give it a distinctive forktail appearance.

Key Features

• Maximum Size: 5.0 cm / ~2 inches SL.
• Appearance: Silvery body with shimmering bright blue eyes and bright yellow fins. Males have brighter colors and curved, wing-like pectoral fins.
• Fin Details: Dorsal spines 4–7, dorsal soft rays 7–9; anal spines 1, anal soft rays 15–18.

Aquarium Care

• Tank Size: Minimum 20–30 gallons for a small school (6 or more recommended for best coloration and natural behavior). Ideal for nano or planted aquariums.
• Water Parameters: Tropical freshwater; 75–82°F (24–28°C), pH 6.0–8.0, soft to moderate hardness.
• Diet: Omnivorous — accepts high-quality flakes, micro-pellets, frozen, and live foods.
• Behavior: Peaceful, active schooling fish. Excellent for planted community tanks with gentle flow and cover.

IUCN Status Data Deficient (DD)

Add bright blue eyes and vibrant yellow fins with the beautiful Forktail Rainbowfish!