Honey Blue Eye Rainbowfish Care Guide

Pseudomugil mellis · Freshwater Fish

Honey Blue Eye Rainbowfish
AI-generated illustration of Honey Blue Eye Rainbowfish
Temperature
72-82°F
pH
7.0-8.0
Adult size
~1.5″ (3.8 cm)
Suggested tank
10+ gal
Group size
6+ together
Origin
Australasia
Family
Pseudomugilidae

What Honey Blue Eye Rainbowfish look like

Pseudomugil mellis, commonly known as the Honey Blue Eye Rainbowfish, exhibits a diminutive, laterally compressed body, typically reaching a maximum adult size of 1.5 inches (approximately 3.8 cm). The species is characterized by its warm honey-golden coloration, which serves as a striking backdrop to its prominent, iridescent blue eyes, a unique feature that enhances its visual appeal. Males are distinguished by their vibrant fin extensions, which are more pronounced than those of females, showcasing sexual dimorphism within the species. The dorsal fin is elongated and pointed, while the anal fin is also elongated, contributing to its streamlined appearance. Additionally, Pseudomugil mellis possesses a well-defined lateral line, which aids in hydrodynamic sensing, and its dentition is adapted for a varied diet, comprising both plant and animal matter. The overall morphology reflects adaptations for life in fast-flowing freshwater environments, where agility and visual acuity are essential for survival.

Behavior & temperament

The Honey Blue Eye Rainbowfish is primarily a social species, often found in small to moderate-sized schools within its natural habitat, which consists of coastal streams in Australasia. It occupies the mid to upper water column, displaying a pelagic lifestyle that allows it to dart among vegetation and surface debris. Breeding behavior involves egg scattering, where females release eggs over substrate or vegetation, and males engage in courtship displays to attract mates. This species exhibits a generally peaceful temperament, although males can display territoriality during breeding seasons, leading to mild aggression towards one another. Their social hierarchy is fluid, with individuals often establishing temporary dominance within the group, particularly during mating rituals.

Diet & feeding

In the wild, Pseudomugil mellis is an omnivore, feeding on a varied diet that includes small invertebrates, zooplankton, and plant matter. In captivity, it thrives on a balanced diet that includes high-quality flake food, micro-pellets, and live or frozen foods such as brine shrimp and daphnia to ensure optimal health and coloration.

Behind the name

Pseudomugil (false mugil); mellis (honey).

Plan your tank

Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.

Keeping Honey Blue Eye Rainbowfish?

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