Redline torpedo barb
Sahyadria denisonii
Also known as Denison barb, Roseline Shark, Denison's barb
FreshwaterFish
Care at a glance
- Temperature
- 59–77°F
- 15–25°C
- pH
- 6.8–7.8
- Adult size
- 4.3 in
- 11 cm
- Minimum tank
- 53 gal
- 200 L
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Middle
- Diet
- Omnivore
- Difficulty
- Easy
- Breeding
- Medium
- Rarity
- Common
- Family
- Cyprinidae
- Origin
- India
Overview
The redline torpedo barb is a peaceful but very active schooling fish for a long, cool community tank. It is easy to keep.
Did you know
The redline torpedo barb's red stripe deepens with age and a good diet. The brightest fish you see are usually mature, well-kept adults rather than young ones at the shop.
Caring for the redline torpedo barb
Keep redline torpedo barbs in a group of at least six, in a long tank of 53 gal (200 L) or more. They are very active and need the swimming room. Give them open swimming lanes over a rocky layout, with strong flow and good oxygen.
Redline torpedo barbs handle a wide range of temperatures but prefer the cooler end, not tropical warmth. Keep the water at 59 to 77°F (15 to 25°C) and a pH of 6.8 to 7.8.
Feed a varied diet of quality flake or pellets, with frozen foods and the occasional vegetable food. They are peaceful and hold the middle water. They stay calmer and more colorful in a proper group. Pair them with other active, cool-tolerant species rather than slow or delicate fish.
Breeding them in captivity is possible but tricky. Farms usually need hormones to spawn them.
Good to know
The redline torpedo barb is a carp relative in the family Cyprinidae, also known as the Denison barb and the roseline shark. Its silver body carries a black and red stripe down the side. Heavy demand from the aquarium trade pushed wild stocks down fast after it became popular, and it is considered threatened in its native range. Most fish sold now come from commercial farms.
In the wild
Redline torpedo barbs come from fast, cool hill streams in the Western Ghats of India. The water flows over rock and gravel, with high oxygen and a steady current.
Weekly picks
Tank mates
The redline torpedo barb is a peaceful, schooling species that keeps to the middle. These picks share a community profile with it, are safe together in both directions, and overlap on water type, temperature and pH.

Neocaridina shrimp
Neocaridina davidi
Freshwater1.6 in (4 cm) · 5 gal (19 L)59–84°F (15–29°C)
Guppy
Poecilia reticulata
FreshwaterBrackish2.4 in (6 cm) · 10 gal (38 L)64–82°F (18–28°C)
Neon tetra
Paracheirodon innesi
Freshwater1.5 in (3.8 cm) · 11 gal (40 L)70–77°F (21–25°C)
Celebes halfbeak
Nomorhamphus liemi
Freshwater3.5 in (9 cm) · 40 gal (150 L)68–77°F (20–25°C)
Darter characin
Apareiodon affinis
Freshwater7.1 in (18 cm) · 53 gal (200 L)64–77°F (18–25°C)
Blue spotted hill trout
Barilius bakeri
Freshwater5.1 in (13 cm) · 53 gal (200 L)64–79°F (18–26°C)
Common questions
What size tank does a redline torpedo barb need?
A redline torpedo barb needs at least 53 gal (200 L). It spends most of its time in the middle.
What temperature and pH does a redline torpedo barb need?
A redline torpedo barb is comfortable at 59–77°F (15–25°C) with a pH of 6.8–7.8.
What does a redline torpedo barb eat?
A redline torpedo barb eats a varied diet of quality flake or pellets. Add frozen foods and the occasional vegetable food.
How big does a redline torpedo barb get?
An adult redline torpedo barb reaches about 4.3 in (11 cm).
Does a redline torpedo barb need a group?
Yes. A redline torpedo barb is a schooling species and should be kept in a group, not singly.
How does a redline torpedo barb breed?
Redline torpedo barbs can be bred in captivity, but it is tricky. Farms usually need hormones to spawn them.
Related species
4.7 in (12 cm)37 gal (140 L)66–77°F (19–25°C)Arulius barb
Dawkinsia arulius
4.7 in (12 cm) · 37 gal (140 L)
4.7 in (12 cm)40 gal (150 L)64–82°F (18–28°C)Everett's barb
Barbodes everetti
4.7 in (12 cm) · 40 gal (150 L)
4.7 in (12 cm)53 gal (200 L)66–77°F (19–25°C)Mascara barb
Dawkinsia assimilis
4.7 in (12 cm) · 53 gal (200 L)
4.7 in (12 cm)63 gal (240 L)75–86°F (24–30°C)Spotscale barb
Barbus holotaenia
4.7 in (12 cm) · 63 gal (240 L)
4.7 in (12 cm)40 gal (150 L)73–79°F (23–26°C)Striped barb
Desmopuntius johorensis
4.7 in (12 cm) · 40 gal (150 L)
4.7 in (12 cm)29 gal (110 L)72–81°F (22–27°C)Walker's barb
Enteromius walkeri
4.7 in (12 cm) · 29 gal (110 L)
