The Spotted Blue Eye (Pseudomugil gertrudae) is a breathtaking nano fish native to the shallow, slow-moving waters of northern Australia and New Guinea, including the Cato Swamp region. Males are a spectacle of colour — vivid electric-blue eyes, a translucent body adorned with fine black spots, and dramatically extended, sail-like fins edged in yellow and white. One of Australia’s most beautiful native fish, and a true showpiece for the nano or species aquarium.
Care Guide
Tank Size: Minimum 40L; best kept in groups of 8 or more with multiple males to encourage display behaviour
Water Parameters: pH 6.0–7.5 | Temp 22–28°C | Soft to moderately hard water; tolerates a range of conditions
Diet: Omnivorous — micro pellets and quality flake; supplement with live or frozen baby brine shrimp and daphnia
Temperament: Peaceful; ideal for nano community tanks with other small, gentle species
Tank Setup: Densely planted with floating plants and gentle flow; mimics their natural swamp and stream habitat
