Denison Barb
Sahyadria denisonii
Minimum Tank
55 Gallons
Adult Size
6 inches
Temperature
65-77°F (18-25°C)
pH Range
6.5-7.8
Lifespan
8 years
School Size
6+ fish
About Denison Barb
The Denison barb, also known as the roseline shark or red-line torpedo barb, is a strikingly beautiful fish endemic to a few river systems in the Western Ghats mountains of Kerala, India. It features a sleek, torpedo-shaped body with a bold red stripe running from the nose through the eye, a black stripe below it, and a vivid yellow-green flash on the tail. Wild populations are endangered due to overcollection and habitat loss, though captive breeding programs have eased pressure on wild stocks. Denison barbs are fast, active swimmers that need ample space and create a stunning display when kept in a proper school. Their combination of elegant appearance and dynamic swimming behavior has made them one of the most sought-after barb species.
Care Requirements
Tank Setup
- • Minimum 55-gallon tank required
- • Temperature: 65-77°F (18-25°C)
- • pH: 6.5 - 7.8
- • Category: Barb
Diet & Feeding
- • Diet type: Omnivore
- • Feed 1-2 times daily
- • Varied diet recommended
Tank Mate Compatibility
Compatible With
Avoid Keeping With
Care Tips
Expert Tips
Denison barbs are active swimmers that need a tank of at least 55 gallons, preferably longer rather than taller, with strong filtration and moderate to high flow. Keep them in groups of at least six, as they are schooling fish that become stressed when kept alone. They prefer clean, well-oxygenated water at 65-77°F with a slightly acidic to neutral pH. Provide a mix of open swimming areas and planted sections with smooth rocks and driftwood. They are generally peaceful but their fast, boisterous swimming can intimidate very timid species. Feed quality flakes, pellets, and frozen foods. Due to their endangered status, purchase only captive-bred specimens from reputable sources.
Quick Facts
208L
Min Tank (55gal)
15cm
Adult Size (6")
8yr
Lifespan
6+
Min School
Build Your Perfect Community Tank
Find compatible tankmates for your Denison Barb
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Tank Mates for Denison Barb
Species from our database with overlapping water parameters, compatible temperaments and a realistic shared tank size.
Rubber Lip Pleco
Chaetostoma sp.
moderate · 20+ gal
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moderate · 30+ gal
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Similar Care Level
Other moderate-care species that suit a comparable setup.
Frequently Asked Questions
What size tank does a Denison Barb need?
A Denison Barb needs a minimum tank size of 55 gallons (208 litres). They should be kept in schools of at least 6.
What water parameters does a Denison Barb need?
Denison Barb thrive in water between 65-77°F (18-25°C) with a pH of 6.5-7.8.
Are Denison Barb easy to care for?
Denison Barb are considered moderate to care for. They are peaceful fish with a lifespan of about 8 years.
How big do Denison Barb get and what do they eat?
Denison Barb reach about 6 inches and are omnivores. Denison barbs are active swimmers that need a tank of at least 55 gallons, preferably longer rather than taller, with strong filtration and moderate to high flow. Keep them in groups of at least six, as they are schooling fish that become stressed when kept alone. They prefer clean, well-oxygenated water at 65-77°F with a slightly acidic to neutral pH. Provide a mix of open swimming areas and planted sections with smooth rocks and driftwood. They are generally peaceful but their fast, boisterous swimming can intimidate very timid species. Feed quality flakes, pellets, and frozen foods. Due to their endangered status, purchase only captive-bred specimens from reputable sources.