Dwarf barb
Pethia phutunio
Also known as Spottedsail barb, Green dwarf barb, Puntius phutunio
Care at a glance
- Temperature
- 72–79°F (22–26°C)
- pH
- 6.0–7.2
- Adult size
- 1.4 in (3.5 cm)
- Minimum tank
- 12 gal (45 L)
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Middle
- Difficulty
- Easy
- Breeding
- Medium
- Rarity
- Common
- Origin
- Native to still and slow waters across India, Bangladesh, Nepal, and Sri Lanka.
- Family
- Cyprinidae
Overview
Keep dwarf barbs in a group of at least eight to ten in a tank of 45 litres or more at 22 to 26 C with a pH of 6.0 to 7.2. A larger group keeps them confident and brings out the best color, especially over dark substrate with plants. Feed small flakes, micropellets, and frozen daphnia, cyclops, and baby brine shrimp. It is a gentle schooler that suits other small, calm community fish and dwarf shrimp too large to be eaten.
In the wild
The dwarf barb lives in ponds, ditches, and slow streams across the northern Indian subcontinent. It shoals in soft to moderately hard water among plants and leaf litter. Males show a row of dark bars and a green-gold sheen, brightest in a shaded, planted tank. It is a small, peaceful barb well suited to nano community tanks.
Good to know
Long traded as Puntius phutunio, the dwarf barb was moved into the genus Pethia in the 2012 barb revision. It is one of the smallest barbs at around 3 to 3.5 cm and carries only tiny barbels at the mouth. FishBase lists it under the common name spottedsail barb, after the marked dorsal fin.
Did you know
In a big group the males light up green and gold as they jostle for position, giving a lot of movement and color in a small planted tank.
Where to buy
Some links may not be the exact species or variety.
…or ask your local fish store.
Appears in
Freshwater fish · Barbs, danios & rasboras · Beginner fish · Schooling fish · Community fish
Keeping Dwarf barb?
Track water tests, reminders and stocking fit.
Related species

Golden dwarf barb
Pethia gelius1.6 in (4 cm)20 gal (75 L)64–75°F (18–24°C)
Odessa Barb
Pethia padamya1.8 in (4.5 cm)20 gal (75 L)61–77°F (16–25°C)
Stoliczka's barb
Pethia stoliczkana2 in (5 cm)20 gal (75 L)64–79°F (18–26°C)Cuming's barb
Pethia cumingii2 in (5 cm)16 gal (60 L)72–81°F (22–27°C)
Black ruby barb
Pethia nigrofasciata2.4 in (6 cm)20 gal (75 L)72–79°F (22–26°C)
Ticto barb
Pethia ticto2.4 in (6 cm)20 gal (75 L)64–75°F (18–24°C)