Rainbow Shark

Rainbow Shark - A Bold, Territorial Standout for the Community Tank

The Rainbow Shark cuts a striking silhouette with its dark torpedo-shaped body, upright shark-like dorsal fin and contrasting red-tinted fins, giving it real presence in the aquarium. It's an active fish that establishes a favourite spot among rockwork or caves and patrols it with confidence.

This species is territorial and should be kept as a single individual per tank, showing semi-aggressive tendencies toward other similarly shaped bottom dwellers while remaining peaceful with dissimilar community fish higher in the water column. Providing plenty of caves and rockwork helps it settle and reduces territorial disputes.

At N8 Aquatics, our fish are carefully raised and conditioned to ensure healthy stock suited to home aquariums.

Species Snapshot

• Size Sold: Juvenile, 4-6 cm
• Adult Size: ~15 cm
• Tank Size: 100 L minimum, plenty of caves/rockwork to establish a territory
• Temperament: Territorial — keep only one per tank
• Temperature: 22-26°C
• pH: 6.5-7.5
• Difficulty: Easy to Moderate

Ideal Habitat and Care

Plenty of caves and rockwork let this species establish and defend a territory, which helps reduce stress and aggression toward tankmates.

• Temperature: 22-26°C
• pH: 6.5-7.5
• Water Flow: Moderate
• Maintenance: Regular water changes with stable, cycled parameters

Diet

An omnivorous diet with some algae content keeps this species in good condition.

• Flake or pellet as a staple
• Algae wafers for grazing
• Occasional frozen food for variety

Compatibility

Peaceful with dissimilar community fish but territorial toward similarly shaped bottom dwellers, so only one should be kept per tank.

Suitable tankmates include:

• Mid-to-upper water community fish
• Tetras and rasboras
• Gourami

Avoid aggressive or fin-nipping species.

Why Buy From N8 Aquatics

• Carefully raised aquarium fish
• Healthy, well-conditioned stock
• Strong genetics and vibrant colouration
• Breeder support if you have questions

Pickup Information

N8 Aquatics currently operates as a local pickup-only breeder in Central Queensland.

Orders are collected by appointment after purchase confirmation.

Please ensure you are able to collect your fish before placing an order.

Important

All livestock sold by N8 Aquatics should be introduced to fully cycled aquariums suitable for the species being kept.

Please ensure your aquarium setup and tankmates are appropriate before purchasing.