Species profile
Filament Barb
Dawkinsia filamentosa
Semi aggressive
Moderate care
300 L minimum aquarium
12–15 cm adult size
Midwater
Minimum group: 8
About this species
General notes for hobby use.
One of the larger community barbs. Long aquarium length matters more than nominal litre count.
Water parameters
Suggested general range for long-term care.
Temperature
20–26 °C
pH
6–7.5
GH
3–15 dGH
KH
Not yet documented
Flow preference
Moderate–high
Data confidence
Verified
Behaviour
General behaviour traits used by TanksConnected compatibility checks.
Minimum group size
Minimum group: 8
Tank zone
Midwater
Territory level
Low
Predation risk
Tiny fry
Bioload factor
1.4
Large schooling barb that becomes impressive and very active as an adult. A proper group reduces persistent chasing, but delicate long fins remain a poor match.
Compatibility flags
Quick cautions for common tank-planning issues.
Fin nipper
Yes / caution
Plant safe
Yes
Shrimp safe
No / caution
Snail safe
Yes
Cave breeder
No
Digs substrate
No
Jump risk
Yes
Natural history & care
Research-backed context for long-term aquarium care.
Lifespan
5–8 years
Diet type
Omnivore
Minimum aquarium volume
300 L
Minimum footprint
150 × 45 cm
Accepted scientific name
Dawkinsia filamentosa
Alternative names
Filament Barb, Puntius filamentosus, Filamentous Barb
Native range
Southern Western Ghats and associated lowland drainages of southern India.
Natural habitat
Rivers, streams and connected lower reaches, often over rock and gravel; clean oxygen-rich water and swimming room are important.
Diet & feeding
General omnivore taking invertebrates, algae and plant material; feed quality dry foods, greens and frozen/live invertebrates.
Breeding & sexing
Research-backed guidance for identifying sexes and reproductive behaviour.
Sexing
Adult males develop long dorsal-fin filaments and stronger breeding colour; females are plainer and deeper-bodied.
Breeding
Egg-scattering species with no parental care; adults may eat eggs and newly hatched fry.