What size tank does a Celebes Rainbow need?

Celebes Rainbow needs a minimum of 10 gallons, with 15 gallons recommended. They are middle swimmers. Keep in groups of 6+.

Is Celebes Rainbow good for beginners?

Celebes Rainbow is rated "intermediate" difficulty (2/5). Great for beginners.

What fish are compatible with Celebes Rainbow?

Celebes Rainbow is peaceful. Compatible tank mates include other peaceful fish with similar water parameters (pH 7-8, temp 72-82°F).

Celebes Rainbow

Marosatherina ladigesi

Family: Telmatherinidae • Origin: Various

Celebes Rainbow (Marosatherina ladigesi) is a peaceful rainbow reaching 3 inches. Keep in groups of 6+. Minimum tank: 10 gallons.

Min Tank

10 gal

Max Size

Temperature

72-82°F

7-8

Lifespan

5 years

School Size

Swim Level

middle

Hardness

5-15 dGH

peacefulintermediateomnivoreschooling

Is Celebes Rainbow Right for Your Tank?

Celebes Rainbow is an excellent choice for beginners — rated "intermediate" difficulty (2/5). They're hardy, forgiving of minor water parameter fluctuations, and generally easy to feed. At just 10 gallons minimum, they work well in nano tanks and smaller setups.

With a peaceful temperament, Celebes Rainbow makes a great community fish. They coexist well with other non-aggressive species of similar size. This is a schooling species — keep at least 6 together, or they may become stressed and display abnormal behavior. Expected lifespan: 5 years with proper care.

Common Mistakes with Celebes Rainbow

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Keeping fewer than 6 together

Celebes Rainbow is a schooling species — they need a group of at least 6 to feel secure. Lone or paired individuals become stressed, hide constantly, and may develop health issues or aggression.

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Relying on a heater without a thermometer

Celebes Rainbow needs 72–82°F. Heaters malfunction or drift over time — always use a separate thermometer to verify. Temperature swings of even 3–4°F can trigger stress and disease, particularly ich.

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Putting them in a tank under 10 gallons

While 10 gallons is the minimum, nano tanks require more frequent water changes and leave less room for error. A slightly larger tank (15 gal) is much more forgiving.