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Spotted Danio
Danio nigrofasciatus
Animalia›Chordata›Actinopterygii›Cypriniformes›Cyprinidae
📍 Myanmar
Small danio with rows of dark spots along the body. Hardy and active — great for cooler water community tanks. Underrated beginner fish.
Care Guide
Diet
Spotted 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, offering only what they can consume in 2-3 minutes. Occasional vegetable matter such as blanched spinach or algae wafers supports digestive health.
Behavior
Spotted Danios are highly active, schooling fish that spend most of their time in the mid-water column darting and chasing. They are peaceful but energetic, requiring plenty of open swimming space and performing best in groups of at least 6 individuals. Their constant movement and social interaction make them engaging to observe.
Breeding
Breeding Spotted Danios in captivity is possible but requires specific conditions including slightly cooler water (18-20°C), dense vegetation, and a separate breeding tank. Females scatter eggs among plants, and parents should be removed immediately as they will eat their own eggs. Fry are tiny and require infusoria or liquid fry food for the first week.
Tank Mates
Similar size, peaceful temperament, and preference for cooler community tanks
Closely related species with compatible behavior and water requirements
Peaceful algae eater that occupies different water zones and won't compete
Peaceful invertebrate that helps with algae control without interfering with active fish
Foreground plant that provides cover and breeding substrate without hindering swimming space
Common Diseases
Ich (Ichthyophthirius multifiliis)
White spots on body and fins, rapid breathing, rubbing against objects
Raise temperature gradually to 28°C, perform daily 25% water changes, use aquarium salt (1 tsp per 5 gallons) or ich medication for 7-10 days
Fin Rot
Frayed or deteriorating fins, discoloration at fin edges, lethargy
Improve water quality with frequent changes, remove sharp decorations, treat with antibacterial medication if severe
Columnaris (Flexibacter columnaris)
Whitish film on body, mouth rot, loss of appetite, rapid gill movement
Increase aeration, perform daily 50% water changes, treat with antibacterial medication; isolate affected fish if possible
Velvet Disease (Oodinium)
Fine golden dust on body, clamped fins, rapid breathing, scratching behavior
Dim lighting, raise temperature to 28°C, treat with copper-free velvet medication for 7-10 days, increase aeration
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Quick Facts
- pH
- 6.0–7.5
- diet
- omnivore
- maxSize
- 1.8 inches
- minTankSize
- 10 gallons
- temperature
- 64–77°F (18–25°C)
Temperature
64–77°F
18–25°C