Roseline Shark - Denisonii Barb

Roseline Shark – Product Description

The Roseline Shark (Sahyadria denisonii), also known as the Denisonii Barb or Red-Line Torpedo Barb, is a striking and energetic schooling fish prized for its bold red lateral stripe, sleek silver body, and vibrant yellow-and-black tail markings. Active, peaceful, and highly visible in the aquarium, Roseline Sharks make an impressive centerpiece species for medium to large, planted community tanks. Their fast, fluid swimming and shimmering colors bring constant movement and beauty to any aquascape.

Care Sheet – Roseline Shark (Sahyadria denisonii)

Temperament

• Peaceful and active

• Best kept in groups of 5+ to reduce stress and aggression

Adult Size

• 4.5–6 inches

Minimum Tank Size

• 55 gallons for a small group

• Larger tanks recommended due to swimming activity

Water Parameters

• Temperature: 72–79°F

• pH: 6.5–7.8

• Hardness: 5–15 dGH

• Ammonia/Nitrite: 0 ppm

• Nitrate: <20–30 ppm

Diet

• Omnivorous

• Enjoys a wide variety of foods:

  • High-quality flakes and pellets

  • Frozen foods (bloodworms, brine shrimp, daphnia)

  • Blanched veggies and spirulina

• Provide mixed diet to maintain color and activity

Behavior & Compatibility

• Excellent for peaceful community tanks

• Ideal tankmates include:

  • Rainbowfish

  • Rasboras

  • Larger tetras

  • Gouramis

  • Peaceful barbs

• Avoid long-finned species (they may nip if underfed or kept in too small a group)

Aquarium Setup

• Strong filtration and good water movement

• Open swimming space

• Planted areas for shelter

• Secure lid—can jump

Care Level

• Moderate

• Requires stable, clean water and plenty of swimming room

Lifespan

• 5–8 years with excellent care

Special Notes

• Colors intensify as they mature and when kept in proper groups

• Sensitive to poor water quality—frequent water changes recommended