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Celebes rainbowfish (Marosatherina ladigesi)
AI illustration, not an ID reference

Celebes rainbowfish

Marosatherina ladigesi

FishFreshwater

Care level
Moderate
Temperament
Peaceful
Recommended tank
150 L
Maximum size
8 cm
Temperature
23–28 °C
pH
7.5–8.5
Group size
≥ 6
Diet
Omnivore

Care at a glance

The Celebes rainbowfish stands out immediately with its yellow body and black lengthwise stripe, and in mature males the elongated, filament-like fin extensions on the dorsal and anal fins. It comes from the island of Sulawesi, where it lives in lime-rich, hard and alkaline water — very different from the soft Amazon waters many other schooling fish come from.

Keep it in a school of at least six, more if possible: kept alone or in too few it stays shy and never shows off its colours and fins. Provide stable, hard, slightly alkaline water and a tank with enough swimming length; beyond that it's a trouble-free, active community fish.

Related species

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Values are mainstream hobbyist guidance, not gospel — always watch what your own animals need.