FORKTAIL BLUE-EYE RAINBOWFISH | PSEUDOMUGIL FURCATUS

The Forktail Blue-Eye Rainbowfish (Pseudomugil furcatus) is a lively and brilliantly colored nano fish native to the clear, fast-moving streams of Papua New Guinea. It’s named for its distinctive forked tail and bright, iridescent blue eyes that sparkle under aquarium lighting. The body glows with a translucent golden-yellow hue, while the fins are edged with vibrant yellow and black, creating a striking contrast that makes this species a favorite for planted and community aquariums.

Adult Forktail Blue-Eyes typically reach about 2 inches (5 cm) in length. Males are more colorful and have more pronounced fin extensions, which they display during courtship dances to impress females. Their constant movement and flashing colors add energy and visual excitement to any tank.

Ideal water parameters:
Temperature: 74–82°F (23–28°C)
pH: 6.0–7.5
Hardness: 5–15 dGH

Tank setup:
Forktail Blue-Eye Rainbowfish thrive in well-oxygenated, planted aquariums of at least 15–20 gallons. They prefer clean, clear water with gentle current and plenty of swimming space. Use live plants such as Java Fern, Guppy Grass, and Water Sprite to provide cover, and floating plants to diffuse light. A dark substrate enhances their yellow tones and makes their blue eyes stand out even more. Keep them in groups of six or more, as they are social schooling fish that display best in numbers.

Diet:
These rainbowfish are micro-predators and omnivores. Offer high-quality micro-pellets, crushed flakes, and frequent live or frozen foods such as brine shrimp, daphnia, bloodworms, and cyclops. Small, frequent feedings bring out their colors and maintain their activity levels.

Temperament and tankmates:
Peaceful, curious, and very active, Forktail Blue-Eye Rainbowfish are excellent for community aquariums. They pair well with other small, gentle species such as rasboras, endlers, guppies, ricefish, small tetras, and corydoras. Avoid larger or aggressive fish that may intimidate or outcompete them.

Breeding:
Males perform elaborate fin displays to attract females, who scatter eggs among fine plants or spawning mops. The eggs hatch in about a week, and the fry can be raised on infusoria or powdered fry food.

In summary, the Forktail Blue-Eye Rainbowfish (Pseudomugil furcatus) is a radiant, playful, and peaceful species that brings motion, color, and personality to any aquarium. With its glowing yellow body, sparkling blue eyes, and forked tail, it’s a perfect choice for aquarists seeking a small, vibrant, and endlessly fascinating schooling fish.