Denison’s Barb (Sahyadria denisonii)

The Denison’s Barb, also known as the Red Torpedo Barb or Roseline Shark, is one of the most striking freshwater fish in the aquarium hobby. Known for its vibrant red stripe, streamlined body, and energetic swimming behavior, this species makes an outstanding centerpiece fish for large community and planted aquariums. Its peaceful temperament and impressive coloration have made it a favorite among aquarists worldwide.

What We Like About This Fish

• Brilliant red stripe and striking coloration
• Active and eye-catching schooling fish
• Peaceful with most community fish
• Hardy and adaptable to a wide range of conditions
• Excellent centerpiece species for larger aquariums
• Beautiful contrast in planted aquascapes

Recommended Tank Parameters

• Tank Size: Minimum 50 gallons (190 liters)
• Temperature: 15–25°C (59–77°F)
• pH Level: 6.5–7.8
• KH: 4–10 dKH
• Water Flow: Moderate to high
• Filtration: Strong filtration recommended

Due to their active nature, Denison’s Barbs require plenty of swimming space and benefit from well-oxygenated water with good circulation.

Care Guidelines

• Diet: Omnivorous; accepts high-quality flakes, pellets, frozen foods, and fresh vegetables such as zucchini and cucumber
• Social Behavior: Peaceful schooling fish; best kept in groups of 6–8 or more
• Origin: Tank-bred; species native to India
• Average Adult Size: 12–15 cm (5–6 inches)
• Average Purchase Size: 6.4–10 cm (2.5–4 inches)
• Shrimp Safe: No; may prey on dwarf shrimp and very small invertebrates

Natural Habitat and Behavior

Denison’s Barbs originate from fast-flowing rivers and streams in southern India. These waterways are typically well-oxygenated and contain rocky substrates, submerged vegetation, and strong currents.

In the aquarium, they are constantly on the move and display their best behavior when maintained in schools. A secure lid is recommended, as this species is known to jump when startled.

Aquascaping and Aquarium Setup

A spacious aquarium with open swimming areas and strong water movement is ideal for Denison’s Barbs.

Recommended Plants

• Anubias
• Java Fern
• Vallisneria
• Amazon Sword
• Cryptocoryne

Recommended Hardscape

• Smooth river stones
• Driftwood
• Rock formations
• Open swimming lanes

The combination of plants and open areas allows these active fish to explore while maintaining a natural appearance.

Tank Mates and Compatibility

Denison’s Barbs are peaceful and can be kept with many larger community fish, including:

• Rainbowfish
• Congo Tetras
• Larger Rasboras
• Peaceful Gouramis
• Angelfish
• Corydoras Catfish
• Larger Loaches

Avoid keeping them with very small fish, dwarf shrimp, or aggressive species.

Why Keep Denison’s Barbs?

Denison’s Barbs are among the most attractive and active freshwater fish available. Their vivid red coloration, schooling behavior, and peaceful nature make them an excellent choice for large community aquariums. When kept in proper groups and provided with ample swimming space, these fish become a stunning centerpiece that brings movement, color, and personality to any aquarium.