Omba Rainbow Fish Melanotaenia Dumasi 5cm

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Omba Rainbow Fish (Melanotaenia dumasi)

Overview

The Omba Rainbow Fish is a small, vibrant freshwater species prized for its shimmering scales and bold coloration, often displaying iridescent blues and subtle reds. Active and schooling in nature, it brings movement and color to community aquariums.

Origin

Native to Omba Island, Indonesia, where it inhabits clear, slow-flowing streams and freshwater lakes with abundant vegetation and open swimming areas.

Feeding

Omnivorous and easy to feed. Diet includes:

• High-quality flakes and pellets

• Frozen or live foods such as brine shrimp, daphnia, and bloodworms

• Occasional vegetable matter to enhance coloration

Tank Mates

Peaceful schooling species best kept in groups of 6 or more. Compatible with:

• Other small rainbowfish

• Tetras, danios, and rasboras

• Corydoras and other gentle bottom dwellers

Avoid: Fin-nipping or aggressive fish that may stress them.

Aggression

Low. Males may show minor display behavior during breeding but are otherwise peaceful.

Experience Level

Beginner to intermediate. Hardy and adaptable, making it suitable for well-maintained tropical community tanks.

Water Parameters

• Temperature: 74–82°F (23–28°C)

• pH: 6.8–7.8

• Hardness: 5–15 dGH

• Notes: Provide open swimming areas with some planted or rocky hiding spots; regular water changes maintain optimal health and coloration.

The Omba Rainbow Fish (Melanotaenia dumasi) is a colorful, peaceful, and active schooling species, ideal for aquarists seeking a dynamic and attractive freshwater centerpiece.

Above images for illustration purposes only. Exact colours, patterns, and size may vary between individuals.

Please Note: The livestock that is sold on our online site is not held in store at our Swell shop, or available for collection from the shop. Species sold at our Swell store will differ from ones available to order to your door.

All livestock deliveries are subject to our full Delivery Terms & Conditions, please read before ordering.