Rasbora Harequin

The Harlequin Rasbora is one of the most popular and recognisable freshwater schooling fish in the aquarium hobby. Loved for its vibrant copper-orange body and distinctive black triangular marking, this peaceful species has become a staple in community aquariums and planted aquascapes around the world.

Graceful, active, and easy to care for, Harlequin Rasboras thrive in schools where their natural behaviour and stunning colours can be fully appreciated. As they move together through the aquarium, they create a beautiful display of synchronised movement that brings life and balance to any setup.

Their peaceful nature makes them ideal companions for a wide range of freshwater species, while their hardiness and adaptability make them an excellent choice for both beginner and experienced aquarists.

Whether you're building a nature-inspired aquascape or a vibrant community aquarium, Harlequin Rasboras are a timeless choice that never disappoints.

Why You'll Love Them

• Beautiful copper-orange coloration
• Distinctive black wedge-shaped marking
• Peaceful and community-friendly
• Stunning schooling behaviour
• Perfect for planted aquariums
• Hardy and beginner-friendly

Care Requirements

• Tank Size: 60L+
• Temperature: 22–28°C
• pH: 6.0–7.5
• Diet: Omnivorous – flakes, micro pellets, frozen foods, and live foods
• Difficulty: Easy

Behaviour & Compatibility

Harlequin Rasboras are peaceful schooling fish and should be kept in groups of six or more, with larger schools producing the most impressive displays.

They pair exceptionally well with:

• Lambchop Rasboras
• Chili Rasboras
• Emerald Eye Rasboras
• Corydoras
• Otocinclus
• Gouramis
• Tetras
• Freshwater Shrimp

Their calm temperament makes them ideal for planted aquariums and peaceful community tanks.

Aquascaping Notes

Harlequin Rasboras truly shine in heavily planted aquariums with dark substrates, driftwood, and natural hardscape. Their warm orange tones contrast beautifully against lush green plants, creating a vibrant and natural display.

Providing open swimming areas alongside dense planting encourages natural schooling behaviour and helps them feel secure.