Mascara Barb
Dawkinsia assimilis
Care at a glance
- Temperature
- 66–77°F (19–25°C)
- pH
- 6.5–7.5
- Adult size
- 4.7 in (12 cm)
- Minimum tank
- 53 gal (200 L)
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Middle
- Difficulty
- Easy
- Breeding
- Medium
- Rarity
- Rare
- Origin
- India
- Family
- Cyprinidae
Overview
Mascara barbs are peaceful, active shoaling fish that need a group of at least six, and preferably more, to look and behave their best and to keep their energy focused within the shoal. They are strong swimmers of the open middle water and do well in a spacious community with other medium sized, active species. Their size and pace can overwhelm very small or shy tankmates, so choose companions of similar build. Feed a varied diet of flake, pellets, frozen foods, and some vegetable matter to keep their color rich. A tank around 200 liters or larger provides the swimming room this lively barb requires.
In the wild
This barb is native to the fast flowing rivers and streams of the Western Ghats in southern India, where it lives in clear, well oxygenated water over rock and gravel. It is comfortable in a moderate range of about 19–25 C and a near neutral pH of 6.5–7.5. Provide a roomy tank with brisk current, a base of sand and rounded gravel, and water worn boulders and driftwood. Keep planting to the margins so the shoal has a long, open lane to swim, and maintain clean, oxygen rich water.
Good to know
Dawkinsia assimilis belongs to the family Cyprinidae and reaches about 12 cm. Like others in its genus, mature males grow extended rays on the dorsal fin and develop rich breeding colors. The genus Dawkinsia was separated from the broad old genus Puntius in 2012 and named for the biologist Richard Dawkins. It is an egg scattering, non guarding spawner that can be bred in a dedicated setup with moderate effort.
Did you know
The name mascara barb comes from the dark, smoky markings that spread across the face and around the eyes of breeding males, as if the fish were wearing eye makeup. At their peak these males also flush with red and gold and trail long dorsal fin rays as they display to females.
Where to buy
Some links may not be the exact species or variety.
- Dan's Fish Freshwater fish, shrimp and snails with a live arrival guarantee
- The Wet Spot Tropical Fish Large freshwater selection from a longtime Portland fish store
…or ask your local fish store.
Appears in
Freshwater fish · Barbs, danios & rasboras · Beginner fish · Schooling fish · Community fish
Keeping Mascara Barb?
Track water tests, reminders and stocking fit.
Related species

Filament Barb
Dawkinsia filamentosa5.1 in (13 cm)53 gal (200 L)68–77°F (20–25°C)
Arulius barb
Dawkinsia arulius3.9 in (10 cm)37 gal (140 L)66–77°F (19–25°C)
Clown Barb
Barbodes everetti4.7 in (12 cm)40 gal (150 L)64–82°F (18–28°C)
Spotscale Barb
Barbus holotaenia4.7 in (12 cm)32 gal (120 L)75–86°F (24–30°C)Striped barb
Desmopuntius johorensis4.7 in (12 cm)40 gal (150 L)73–79°F (23–26°C)
European minnow
Phoxinus phoxinus5.1 in (13 cm)45 gal (170 L)54–68°F (12–20°C)
