Species profile
Queen Danio
Devario regina
Peaceful
Moderate care
200 L minimum aquarium
7–10 cm adult size
Mid–top
Minimum group: 8
About this species
General notes for hobby use.
Fast, powerful shoaling Devario from mountain streams. Needs substantially more swimming length than the legacy 90 L value implied.
Water parameters
Suggested general range for long-term care.
Temperature
20–26 °C
pH
6–8
GH
2–12 dGH
KH
Not yet documented
Flow preference
High
Data confidence
Verified
Behaviour
General behaviour traits used by TanksConnected compatibility checks.
Minimum group size
Minimum group: 8
Tank zone
Mid–top
Territory level
Low
Predation risk
Shrimp fry
Bioload factor
1.2
Peaceful but extremely active. Can unsettle timid or slow fish; keep a good-sized shoal in a long, well-covered aquarium.
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
200 L
Minimum footprint
120 × 45 cm
Accepted scientific name
Devario regina
Alternative names
Queen Danio, Fowler's Danio
Native range
South and South-east Asia, including Myanmar, Thailand, Laos, Malaysia and the middle Mekong region.
Natural habitat
Rapid-running mountain streams and flowing sandy/rocky waters. Provide strong oxygenation, current and a long open swimming area.
Diet & feeding
Active omnivore/invertivore; feed quality dry foods with regular frozen/live insect and crustacean foods.
Breeding & sexing
Research-backed guidance for identifying sexes and reproductive behaviour.
Sexing
Females are generally fuller-bodied; males are slimmer and may show stronger colour.
Breeding
Egg-scattering cyprinid without parental care; protect eggs from adults if breeding deliberately.