Species profile
Scissortail Rasbora
Rasbora trilineata
Peaceful
Easy care
180 L minimum aquarium
8–12 cm adult size
Mid–top
Minimum group: 8
About this species
General notes for hobby use.
Large, very active schooling rasbora requiring much more horizontal room than smaller Trigonostigma species.
Water parameters
Suggested general range for long-term care.
Temperature
22–25 °C
pH
6–8
GH
Up to 20 dGH
KH
Not yet documented
Flow preference
Moderate
Data confidence
Verified
Behaviour
General behaviour traits used by TanksConnected compatibility checks.
Minimum group size
Minimum group: 8
Tank zone
Mid–top
Territory level
None
Predation risk
Small fish
Bioload factor
1
Peaceful but fast and large enough to intimidate tiny fish. Keep a good shoal in a covered aquarium with a long open swimming lane.
Compatibility flags
Quick cautions for common tank-planning issues.
Fin nipper
No
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
Not yet documented
Diet type
Omnivore
Minimum aquarium volume
180 L
Minimum footprint
120 × 40 cm
Accepted scientific name
Rasbora trilineata
Alternative names
Scissortail Rasbora, Three-lined Rasbora, Rasbora trilineata
Native range
Widely distributed in Southeast Asian freshwater systems, including mainland and Sunda-region drainages.
Natural habitat
Open-water river/stream and floodplain habitats. Provide a long tank, moderate circulation, cover at the margins and an unobstructed swimming lane.
Diet & feeding
Omnivorous/insectivorous rasbora. Feed quality flakes/pellets plus appropriately sized frozen/live invertebrates.
Breeding & sexing
Research-backed guidance for identifying sexes and reproductive behaviour.
Sexing
Females are usually fuller/deeper-bodied; males tend to be slimmer.
Breeding
Egg-scattering non-guarder. Adults provide no brood care and may consume eggs.