Pseudomugilidaefreshwater fishbeginner

Pacific Blue-eye

Pseudomugil signifer

Also known as: Pacific Blue-eye, Pacific Blue Eye

Origin: Australia (eastern coast)

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Water Parameters

Temperature1826 °C
15 °C35 °C
pH6.58
49
GH (Hardness)318 °dGH
0 °dGH30 °dGH
KH (Alkalinity)110 °dKH
0 °dKH20 °dKH

Quick Stats

Max Size
4 cm
Min Tank
40 L
Lifespan
3-5
Swimming Level
middle
Schooling
Yes (6–12+)
Diet
omnivore
Temperament
active, peaceful schooling fish

About

Pseudomugil signifer is widespread along the eastern Australian coast from Queensland to New South Wales, inhabiting a diverse range of freshwater and estuarine environments. Its broad tolerance for water conditions, including brackish water, makes it exceptionally hardy. Males develop yellow fin coloration and vivid blue eyes at maturity.

Care Guide

Water: 18–26°C, pH 6.5–8.0, soft to hard; tolerates mild salinity. Tank: 40 L+, planted with open swimming areas; gentle filtration. Feeding: Omnivore; small flakes, micro-pellets, and frozen/live micro-foods. Behaviour: Active, peaceful, schooling; tolerant of a wider range of conditions than most blue-eyes. Compatibility: Excellent with other small peaceful fish; suitable for brackish nano setups.

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