Celebes Rainbow

Marosatherina ladigesi

Celebes Rainbow (Marosatherina ladigesi) — Intermediate care, Peaceful, under Rainbowfish. Minimum tank in the app: 25 US gal min; aim for 72–82°F and pH 6.5–8. Celebes Rainbows are well-suited for aquarists looking for active, social fish that thrive in community settings.

Celebes Rainbow (Marosatherina ladigesi) in a planted freshwater aquarium
Care levelIntermediate
TemperamentPeaceful
Min tank size25 US gal min
pH range6.5–8
Temperature72–82°F
Max size3.1 in (8.0 cm)
Captive lifespan5–8 years
SchoolingYes · 6+ recommended

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

Australia / New Guinea

  • Australia & Oceania

Regional colours match the stocking calculator’s origin map.

Celebes Rainbow Tank Setup

Aim for a spacious aquarium layout that provides both open swimming areas and ample cover with plants and decorations. A soft substrate is ideal to mimic their natural habitat, while moderate water flow encourages natural swimming patterns. Lighting should be bright enough to enhance their colors but also provide shaded areas to create a dynamic environment.

What Do Celebes Rainbows Eat?

These omnivores are generally moderate feeders, but competition can arise if not enough food is provided. A varied diet including high-quality flakes, pellets, and occasional live or frozen foods will enhance their color and vitality.

Celebes Rainbow Tank Mates

Celebes Rainbows coexist well with similarly-sized, non-aggressive species that occupy the mid to upper water column, such as other rainbowfish or small characins. Avoid pairing with overly aggressive or large predatory fish, which may intimidate or threaten them. Within their own species, maintaining groups of at least six is crucial to prevent stress and ensure a cohesive social structure.

Are Celebes Rainbows Good for Beginners?

We rate this as intermediate. Budget time for testing, maintenance, and watching behaviour if the water looks fine but the fish do not. Common pitfalls include underestimating the need for group dynamics, leading to stressed individuals if kept in smaller numbers. neglecting water quality and tank size can result in increased aggression or health problems.

Building a community? Run the full list through the stocking calculator before you add anything else.

Log tests and reminders in App-aquatic—free, same data you see here.