Description
Roseline Barb
Also known as Denison Barb or Red Line Torpedo Barb
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Species Background
Roseline Barbs originate from fast flowing rivers and streams in the Western Ghats of India. These habitats are cool, oxygen rich, and structured with rock, sand, and submerged roots. Most individuals available today are tank bred, which has increased their adaptability to a wider range of freshwater conditions compared to wild fish.
Behavior and Temperament
Roseline Barbs are active, fast swimming, and highly social. They are true schooling fish are best kept in groups to behave normally. In small numbers they become restless and skittish. In proper groups they form coordinated schools and cruise continuously through the midwater. They are not aggressive, but their speed and constant motion can stress slow moving or long finned fish.
Compatible tankmates include
• Larger tetras
• Rainbowfish
• Peaceful barbs
• Loaches and other active bottom dwellers
Adult Size
Adults typically reach
• Five to six inches in length
Water Parameters
Tank bred Roseline Barbs tolerate a broad range when conditions remain stable.
Ideal range
• Temperature: 72 to 78°F
• pH: 6.2 to 7.6
• GH: 4 to 15
• KH: 2 to 10
Stable, well oxygenated water is more important than chasing exact numbers.
Diet
Roseline Barbs are omnivorous and eager eaters.
• High quality flakes or pellets
• Slow sinking foods
• Frozen brine shrimp, mysis, and bloodworms
• Occasional live foods for conditioning
A varied diet supports long term health and strong coloration.
Tank Requirements
• Minimum tank size: 55 gallons
• Longer tanks are strongly preferred
• Moderate to strong flow
• Open swimming space with plants or hardscape along the perimeter
They perform best in clean, well circulated systems with plenty of horizontal swimming room.
Why They’re Popular
Roseline Barbs are kept for their striking red stripe, metallic body, and constant motion. In larger aquariums they add energy and visual flow without aggression, making them excellent centerpiece schooling fish for planted and river style setups.




dante hernandez (verified owner) –
very nice fish and thank you Mr Jakob.
Jacob (store manager) –
Glad everything arrived safely, Enjoy!