Pseudomugil Furcatus (Blue Eye Forktail Rainbowfish) Care Guide
 
Introduction
The Forktail Rainbowfish (Pseudomugil furcatus), also known as the Blue-Eyed Forktail or Furcata Rainbowfish, is an excellent inhabitant for any community or planted aquarium. Native to the densely planted rainforest streams of eastern Papua New Guinea, this adaptable fish thrives in aquarium settings. 
 
Natural Habitat
In the wild, the Blue Eye Forktail Rainbowfish inhabits the densely vegetated rainforest streams of eastern Papua New Guinea. These environments provide ample hiding spots and breeding areas, which can be easily replicated in home aquariums.
 
Aquarium Setup
To create an optimal environment for Forktail Rainbowfish, ensure the aquarium includes:
Substrate: A sandy or fine gravel substrate.
Vegetation: Plenty of hardy aquarium plants and floating plants like duckweed and hornwort.
Cover: Ample areas of cover such as caves and plant thickets.
Water Stability: Clean, stable water conditions.
Because these fish are prone to jumping, a hood or canopy is recommended. A tank of at least 20 gallons is suitable for a school of these fish.
 
Water Parameters
Temperature: 75° - 79° F (24° - 26° C)
pH: 6.0 - 8.0 (7.6 is most ideal but not required as this is a very adaptable fish)
KH: 5 - 12 dKH
Maintaining these water parameters is crucial for the well-being of the Blue Eye Forktail Rainbowfish.
 
Diet and Feeding
Forktail Rainbowfish are omnivorous and thrive on a varied diet. Recommended foods include:
Staple Diet: High-quality flake foods.
Treats: Live, freeze-dried, and frozen foods such as brine shrimp and bloodworms.
Feeding them a variety of foods helps enhance their vibrant coloration.
Behaviour and Social Structure
The Blue Eye Forktail Rainbowfish is peaceful and best kept in schools of six or more, with multiple males and females. Males can be somewhat aggressive if kept in pairs but are generally peaceful in larger groups.
 
Compatibility with Other Species
Due to their peaceful nature and appropriate size, Blue Eye Forktail Rainbowfish can be housed with dwarf shrimp and other non-aggressive nano species. They are excellent for inhabiting the middle and top levels of the aquarium.
 
Physical Characteristics
Coloration: Bright blue eyes, grey to green body, and bright yellow edges on all fins with black margins on the rear dorsal, anal, and caudal fins. These colors intensify with age and a proper diet.
Size: Average adult size is 2.5 inches (6.5 cm); purchase size ranges from 1/4 - 3/4 inch (.64 - 1.9 cm).
Breeding
 
The Blue Eye Forktail Rainbowfish is a tank-bred species. Breeding is relatively straightforward with clean water and a varied diet. Provide plenty of plants and hiding spots to facilitate breeding.
Health Considerations
As with all aquarium fish, regular health checks and maintaining optimal water conditions are essential. The Blue Eye Forktail Rainbowfish is hardy and adaptable, making it a robust choice for hobbyists.
 
What We Like About This Fish:
Beautiful yellow, green, and black coloration, including bright blue eyes
Peaceful disposition and suitable size for peaceful invertebrates
Hardy and adaptable
Excellent for inhabiting the middle and top levels of the aquarium
 
Recommended Tank Parameters:
Temperature: 75° - 79° F (24° - 26° C)
pH: 6.0 - 8.0 (7.6 is most ideal but not required as this is a very adaptable fish)
KH: 5 - 12 dKH
Minimum Tank Size: 20 gallons
 
Care Guidelines:
Diet: Omnivorous. High-quality flake, freeze-dried and frozen foods, both meaty and plant-based.
Social Behavior: Peaceful, schooling. Males can be somewhat aggressive in pairs, but not when kept in groups with several females.
Origin: Tank-bred, but indigenous to eastern Papua New Guinea.
Average Adult Size: 2.5 inches (6.5 cm).
Average Purchase Size: 1/4 - 3/4 inch (.64 - 1.9 cm).
 
Conclusion
With their striking coloration and peaceful nature, Blue Eye Forktail Rainbowfish are a captivating addition to any aquarium. Proper care, a well-maintained tank, and appropriate tank mates ensure these fish thrive, providing beauty and enjoyment for aquarists.