Ramu rainbowfish - Glossolepis ramuensis

Scientific name: Glossolepis ramuensis

Common name: Ramu rainbowfish

Family: Melanotaeniidae

Usual size in fish tanks: 6 - 8 cm (2.36 - 3.15 inch)

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Recommended pH range for the species: 7.3 - 7.8

Recommended water hardness (dGH): 5 - 13°N (89.29 - 232.14ppm)

0°C 32°F30°C 86°F

Recommended temperature: 25 - 28 °C (77 - 82.4°F)

The way how these fish reproduce: Spawning

Where the species comes from: Oceania

Temperament to its own species: peaceful

Temperament toward other fish species: peaceful

Usual place in the tank: Middle levels

Introduction

Glossolepis ramuensis, commonly known as Ramu Rainbowfish, is a peaceful and colorful species native to Papua New Guinea. Known for their shimmering scales and active swimming behavior, these fish are a vibrant addition to community aquariums. They thrive in groups and are ideal for aquarists looking for an engaging and eye-catching species.

Food and Feeding

Ramu Rainbowfish are omnivorous and thrive on a varied diet. Provide a staple diet of high-quality flake or small pellet food to meet their nutritional needs. To enhance their coloration and health, supplement with live or frozen treats such as brine shrimp, daphnia, or bloodworms twice a week. Feeding small portions multiple times a day helps mimic their natural grazing behavior and keeps them active.

Habitat and Tank Requirements

To replicate their natural habitat, set up a spacious tank with plenty of swimming areas and some dense planting along the edges. Suitable plants include Vallisneria (Vallisneria spiralis), Java Fern (Microsorum pteropus), and Water Wisteria (Hygrophila difformis). Maintain water parameters with a pH of 7.3-7.8, hardness of 5-13°N (89.29-232.14 ppm), and a temperature between 25-28°C (77-82.4°F). Use a tight-fitting lid, as these fish are excellent jumpers. A gentle current and regular water changes are essential for their well-being.

Sexing

Male Ramu Rainbowfish are slightly larger and display more vibrant coloration than females, particularly during the spawning season. Females are generally smaller and have a more subdued appearance.

Breeding

Breeding Glossolepis ramuensis is straightforward with proper preparation. Set up a breeding tank with Java Moss or spawning mops to provide a safe site for egg-laying. Condition the breeding pair with live or frozen foods for two weeks before introducing them to the breeding tank. Spawning occurs over several days, with a few eggs laid each day. Once spawning is complete, remove the parents to prevent them from eating the eggs. The eggs typically hatch within 48 hours, and the fry become free-swimming shortly after. Feed the fry with Infusoria or other microscopic foods, gradually transitioning to baby brine shrimp as they grow.

Lifespan

With proper care, the expected lifespan of Glossolepis ramuensis is approximately 5 years, making them a rewarding long-term addition to aquariums.

Behavior and Compatibility

Ramu Rainbowfish are peaceful and social fish that should be kept in groups of at least six to encourage natural schooling behavior. They are excellent additions to community tanks and coexist well with other non-aggressive species such as Harlequin Rasboras (Trigonostigma heteromorpha), Neon Tetras (Paracheirodon innesi), and Dwarf Gouramis (Colisa lalia). Their active nature makes them an engaging species to watch, especially in the middle levels of the tank.

Short Description

Glossolepis ramuensis, or Ramu Rainbowfish, is a peaceful, colorful species perfect for planted community aquariums. Their shimmering scales and schooling behavior make them a visually appealing choice for aquarists. Ensure a spacious tank with a secure lid and maintain pristine water conditions to keep them thriving.