Celebes Rainbowfish (Marosatherina ladigesi)

Celebes Rainbowfish (Marosatherina ladigesi)

Common Name: Celebes Rainbowfish
Scientific Name: Marosatherina ladigesi
Size: 2–2.5 inches (5–6.5 cm)
Origin: Sulawesi (Celebes), Indonesia
Temperament: Peaceful, active, and social
Minimum Tank Size: 20 gallons
Water Conditions:

• Temperature: 72–82°F (22–28°C)

• pH: 7.0–8.0

• Hardness: Moderate to hard (10–20 dGH)

The Celebes Rainbowfish is a dazzling, graceful species prized for its shimmering silver-blue body, electric yellow highlights, and delicate filamentous fin extensions. Native to the clear, slow-moving streams and coastal swamps of Sulawesi, this fish brings subtle elegance and constant motion to any well-planted aquarium.

A true schooling species, Celebes Rainbowfish thrive in groups of 6 or more and show their best colors and natural behavior when kept in a peaceful community setup. Their delicate frame and unique coloration make them a favorite among nano and planted tank enthusiasts.

Fun Facts:

• Despite their name, Celebes Rainbowfish are not true members of the Melanotaeniidae family but belong to a separate rainbowfish group (Telmatherinidae).

• Males display stunning long fin extensions and brighter coloration when competing or courting.

• These fish are sensitive to poor water quality—clean, stable conditions are key to their health and vibrancy.

Diet:
Omnivorous—enjoys a varied diet of high-quality micro pellets, crushed flakes, baby brine shrimp, daphnia, and other small live or frozen foods.

Compatibility:
Ideal for peaceful community aquariums. Pair with similarly sized, non-aggressive species like rasboras, small tetras, and shrimp.

Bring a touch of Sulawesi’s natural brilliance to your tank with the Celebes Rainbowfish—a truly unique species that adds both motion and sparkle to any aquascape!