Species profile
Zebra Danio Longfin
Danio rerio
Peaceful
Easy care
60 L minimum aquarium
4–5 cm adult size
Top mid
Minimum group: 6
About this species
General notes for hobby use.
Long-finned domestic Zebra Danio. Hardy, highly active and social; it needs swimming length and a proper group despite its small size.
Water parameters
Suggested general range for long-term care.
Temperature
15–24 °C
pH
6–8
GH
Up to 25 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: 6
Tank zone
Top mid
Territory level
None
Predation risk
Shrimp fry
Bioload factor
0.6
Fast shoaling fish. Under-grouped or cramped danios can become persistent chasers/fin nippers; secure covers are sensible because they jump readily.
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
Not yet documented
Diet type
Omnivore
Minimum aquarium volume
60 L
Minimum footprint
60 × 30 cm
Accepted scientific name
Danio rerio
Alternative names
Zebra Danio Longfin, Longfin Zebra Danio, Danio rerio longfin
Native range
Captive domestic form of Danio rerio; the parent species is native to South Asia.
Natural habitat
Parent species uses shallow streams, floodplains and still/slow waters. Provide open horizontal swimming space, good oxygen and planted margins.
Diet & feeding
Small omnivore/insectivore. Feed varied flakes/micro-pellets and suitably sized frozen/live foods.
Breeding & sexing
Research-backed guidance for identifying sexes and reproductive behaviour.
Sexing
Females are usually fuller-bodied; males are slimmer and often more intensely coloured. Long fins are a domestic trait in both sexes.
Breeding
Egg-scattering non-guarder. Adults readily eat eggs; dedicated breeding setups use mesh/marbles or dense fine plants.