Pacific Signifer Blue-Eye

Pacific Blue-Eye (Pseudomugil signifer)

A small and hardy blue-eye rainbowfish from coastal streams, estuaries, and mangrove areas of eastern Australia. Known for its bright blue eyes and adaptability to both freshwater and brackish conditions.

Key Features

• Maximum Size: 7.0 cm / ~2.8 inches SL (typically 3–4 cm in aquariums).
• Appearance: Silvery or pale olive body with bright blue eyes. Males have extended fin filaments and may show orange fins during breeding season.
• Fin Details: Two dorsal fins.

Aquarium Care

• Tank Size: Minimum 20 gallons for a small school (6 or more recommended).
• Water Parameters: 68–86°F (20–30°C), pH 6.5–8.0, variable hardness. Tolerates brackish water.
• Diet: Omnivorous — accepts small foods, flakes, frozen, and live foods.
• Behavior: Peaceful, active schooling fish. Excellent for planted aquariums with gentle flow.

IUCN Status Least Concern (LC)