Roseline Shark (Sahyadria denisonii)

Roseline Sharks (Sahyadria denisonii), also called Denison barbs or red-line torpedo barbs, are sleek Indian cyprinids with a blazing red lateral stripe and black accents.

They are powerful schooling fish that need long tanks, strong filtration, and companions that can match their swimming stamina.

When kept in a proper group, few freshwater fish match their torpedo speed and show-floor color.

Quick care

• Adult size: About 4–6 inches
• Temperament: Peaceful but very active; may intimidate timid slow fish
• Minimum tank size: 55–75 gallons for a school of 6+
• Diet: Quality flakes/pellets, frozen foods, vegetable matter
• Water: 65–79°F; pH 6.5–7.8; well-oxygenated water
• Ideal tank mates: Other active barbs and rainbows, larger tetras; not with tiny nano fish

Frequently asked questions

What tank size do Roseline Shark (Sahyadria denisonii) need?

Adults need long aquariums—many keepers target 75+ gallons for a school. These torpedo cyprinids are constant swimmers. Short tanks frustrate them.

How many Roseline Shark (Sahyadria denisonii) should I keep?

A group of six or more reduces nervousness and fin damage from stress. Singles often stay flighty. Schooling is core to their well-being.

Are Roseline Shark (Sahyadria denisonii) peaceful community fish?

Mostly peaceful with similarly sized active fish. They may outcompete shy species at feeding time. Skip tiny nanos and ultra-aggressive cichlids.

What water parameters suit Roseline Shark (Sahyadria denisonii)?

Well-oxygenated, clean water around the mid-70s °F with mature filtration. They dislike poor oxygen and crowding. Strong current and open swimming lanes help.

What do Roseline Shark (Sahyadria denisonii) eat?

Quality flakes/pellets plus frozen foods and some vegetable matter. They’re eager mid-water feeders. Varied diets keep the red-and-black line vivid.

Are Roseline Shark (Sahyadria denisonii) good for beginners?

Only if you can provide adult swimming space and excellent water quality. Hardy when settled, but not a small-tank fish. Plan big from the start.