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Queen Danio
Devario regina
Animalia›Chordata›Actinopterygii›Cypriniformes›Danionidae
📍 Thailand, Myanmar & Laos
Robust danio with a metallic blue-and-gold striped pattern and a distinctive forked tail. Active and fast. Often kept as a dither fish with shyer species. Tolerates a wide range of water conditions.
Care Guide
Diet
Queen Danios are omnivores that thrive on a varied diet of high-quality flake food, micro pellets, and small frozen foods like brine shrimp and daphnia. Feed small amounts once daily, providing only what they can consume in 2-3 minutes. Supplement occasionally with blanched vegetables like zucchini to ensure balanced nutrition.
Behavior
Queen Danios are highly active, fast-swimming fish that spend most of their time in the mid-water column darting around the tank. They are peaceful schooling fish that must be kept in groups of at least 6 to display natural behavior and reduce stress. Their energetic nature makes them excellent dither fish for encouraging shy species to be more active.
Breeding
Breeding Queen Danios in captivity is possible but requires specific conditions including slightly cooler water (20-22°C), dense vegetation or spawning mops, and well-conditioned adults. They are egg-scatterers that do not guard their young, so eggs and fry must be protected from predation by separating them into a breeding tank. Success rates vary, and fry require infusoria or liquid fry food initially before graduating to micro foods.
Tank Mates
Similar size, peaceful temperament, and mid-water swimming zone; compatible water parameters
Closely related danio species with identical care requirements and compatible schooling behavior
Peaceful bottom-dweller that won't compete for space; helps maintain tank cleanliness
Small, peaceful fish that occupy similar water column; compatible temperature and pH ranges
Generally peaceful but may become territorial; monitor for aggression in smaller tanks
Common Diseases
Ich (Ichthyophthirius multifiliis)
White spots on body and fins, rapid breathing, flashing against objects, lethargy
Raise temperature gradually to 28-30°C, perform daily 25% water changes, use aquarium salt (1 tsp per gallon) or commercial ich treatment; maintain for 10-14 days
Fin Rot
Frayed or deteriorating fins, discoloration at fin edges, fin loss
Improve water quality with frequent partial water changes, remove any sharp tank decorations, treat with antibacterial medication if severe; ensure good water flow and aeration
Columnaris (Flexibacter columnaris)
White or grayish film on body, mouth, or gills; rapid breathing; loss of appetite
Increase aeration, perform daily 50% water changes, treat with antibacterial medication; isolate affected fish if possible to prevent spread
Stress-Related Illness
Loss of color, reduced activity, clamped fins, susceptibility to other infections
Ensure minimum school size of 6, reduce tank disturbances, maintain stable water parameters, provide adequate hiding spaces and vegetation
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Quick Facts
- pH
- 6.0–7.5
- diet
- omnivore
- maxSize
- 2.5 inches
- minTankSize
- 25 gallons
- temperature
- 68–79°F (20–26°C)
Temperature
68–79°F
20–26°C