Furcatus Rainbowfish (Pseudomugil furcatus)
The Furcatus Rainbowfish, Pseudomugil furcatus, is a bright, lively blue-eye rainbowfish with a slim body, vivid blue eyes and striking yellow-edged fins that give it a cheerful, animated appearance in planted aquariums. Also known as the Forktail Rainbowfish or Forktail Blue-eye, this peaceful species is best kept in a group where males can display their extended fins and forked yellow tail to females and rival males. It is small, active and generally hardy when settled, but it still needs a mature aquarium, calm tank mates and regular feeding with suitably small foods.
Common Name:
Furcatus Rainbowfish, Forktail Rainbowfish, Forktail Blue-eye, Forktail Blue Eye Rainbowfish.
| Specification | Detail |
|---|---|
| Scientific Name | Pseudomugil furcatus |
| Size | Up to 4 cm (1.5 inches) |
| Lifespan | 5 to 7 years |
| Temperament | Peaceful, social |
| Water Temperature | 22–26°C |
| Water pH | 6.0–7.5 |
| Water Hardness | 2–12 dGH |
| Group Size | 6 or more for best display |
FAQ
What is the ideal tank size for Furcatus Rainbowfish?
A mature aquarium of at least 30 liters is recommended to provide enough space for active swimming and social behavior.
Are Furcatus Rainbowfish compatible with other fish?
They are best kept with calm, non-aggressive species such as danios, Corydoras, or other small community fish. Avoid aggressive or fast-swimming fish.
How often should I feed my Furcatus Rainbowfish?
Feed small amounts 2–3 times per day, offering foods like brine shrimp, microworms, or high-quality flake food suitable for small fish.
Justin Ross –
The Furcatus Rainbowfish are very active and colorful. I kept them in a 40-liter planted tank with Corydoras and they get along well. The blue eyes and yellow fins stand out beautifully in the water. Easy to care for once the tank is mature.
Natalie Glover –
They are peaceful and add a lot of visual interest. I noticed the males show off their fins when the tank is quiet. I feed them twice daily with microworms and flakes. They seem to thrive in a well-planted environment.
Sue Davidson –
Great addition to a community tank. The fish are lively and don’t stress other species. I’ve had them for six months and they’re still active and healthy. The yellow-edged fins are very noticeable.