Pseudomugil Luminatus: A Comprehensive Guide

Pseudomugil luminatus, commonly known as the Red Neon Blue-Eye or Luminatus Rainbow, is a captivating freshwater fish admired for its vibrant colors and striking appearance. This guide provides detailed information on Pseudomugil luminatus, covering their natural distribution and habitat, dietary needs, tank mates, and spawning practices.

Distribution and Habitat

Pseudomugil luminatus is native to Papua New Guinea, specifically found in the Timika region of West Papua. They inhabit slow-moving streams, swamps, and lagoons with dense vegetation and leaf litter, which provide ample hiding spots and breeding grounds.

Size and Appearance

Pseudomugil luminatus typically grows to a size of about 1-1.5 inches (2.5-3.8 cm). They have a slender, elongated body with a brilliant red or orange coloration and iridescent blue eyes. Males are particularly striking, displaying elongated fins with white or yellow edges, making them a standout in any aquarium.

Water Parameters

Maintaining optimal water conditions is crucial for the health of Pseudomugil luminatus:

  • Temperature: 72-79°F (22-26°C)
  • pH: 6.0-7.5
  • Hardness: 5-15 dGH

These fish thrive in well-maintained aquariums with stable water conditions and good filtration to mimic their natural habitat.

Tank Mates

Pseudomugil luminatus are peaceful and social fish, making them ideal for community tanks. Suitable tank mates include:

  • Tetras
  • Rasboras
  • Corydoras
  • Small peaceful cichlids
  • Other rainbowfish
  • Livebearers like guppies and platies

Avoid housing them with larger or aggressive fish that might intimidate or harm them.


In the wild, Pseudomugil luminatus are omnivores, feeding on small invertebrates, plant matter, and detritus. In captivity, they thrive on a varied diet:

  • High-quality flakes or micro pellets formulated for small omnivores
  • Live or frozen foods such as daphnia, brine shrimp, and micro worms
  • Blanched vegetables like spinach and zucchini

A varied diet ensures their vibrant coloration and overall health.


Pseudomugil luminatus are active and engaging fish, often seen swimming in the mid to upper levels of the tank. They are social creatures that should be kept in groups of at least six to promote natural behaviors and reduce stress. Their peaceful nature makes them excellent tank mates for a variety of species.


Breeding Pseudomugil luminatus in captivity can be achieved with the right conditions. Key points include:

  1. Conditioning: Feed the breeding group a high-protein diet, including live and frozen foods, for several weeks.
  2. Breeding Tank: Set up a separate breeding tank with fine-leaved plants or spawning mops to provide surfaces for egg deposition.
  3. Spawning Process: Perform regular water changes with slightly cooler water to stimulate spawning. Females will scatter adhesive eggs on plants or mops. Remove the adults after spawning to prevent them from eating the eggs.
  4. Hatching: Eggs typically hatch within 7-10 days. Feed the fry infusoria or liquid fry food until they are large enough to consume baby brine shrimp.

Fun Facts

  • Pseudomugil luminatus are known for their striking coloration and iridescent blue eyes, making them a favorite among aquarists.
  • They are active swimmers and thrive in well-planted aquariums with plenty of open swimming space.
  • These fish are social and prefer to be kept in groups, which enhances their natural behaviors and overall well-being.


Pseudomugil luminatus, with their brilliant colors and active demeanor, make a delightful addition to any freshwater aquarium. By understanding their natural habitat, dietary needs, and care requirements, aquarists can ensure these charming fish thrive in captivity. Whether you're a novice or an experienced fish keeper, Pseudomugil luminatus offers a glimpse into the world of dynamic and interactive freshwater fish.

Looking to add Pseudomugil luminatus to your aquarium? We recommend purchasing from trusted suppliers like The Wet Spot Tropical Fish and Dan's Fish for high-quality, healthy fish. These reputable retailers offer a great selection and expert advice to ensure you find the perfect fish for your tank.