Freshwater
Blue danio
Danio kerri
Danionidae, Danioninae
Facts
Characteristics
- Length
- Up to 5 cm
- Body shape
- Streamlined
Care
- Group
- At least 6 together
- Smallest aquarium
- 31 liters
- Diet
- Missing
Know what is missing? Suggest it in the app.
Behavior
Water values
Smallest tank
Range
Videos
Snorkeling with Wild Betta and Finding a Mysterious Population | EP 1 Betta in the Wild
Rodrigo SilvaApr 5, 2026
Snorkeling With Freshwater Puffers | Exploring Southern Thailand EP3
Rodrigo SilvaJan 16, 2026
Thailand’s Rarest Goby? Hill Streams & Waterfalls | Exploring Southern Thailand EP2
Rodrigo SilvaDec 28, 2025
Deep Blue Springs & Critically Endangered Bettas | Exploring Southern Thailand EP1
Rodrigo SilvaDec 18, 2025
More about the species
Other names
Other scientific names
- Brachydanio kerri
In other languages
- Kerridanio
- Ø-danio
- Hehkuseeprakala, Kultaseeprakala
- Kerr's danio, Splendid danio
Articles
All articles
How many fish can I keep?4 min read
Why "one cm of fish per liter" falls short, and what adult size, schools, territory and swimming zones mean for how many fish a tank can hold.
Velvet and dropsy4 min read
Velvet is a fast-moving parasite. Dropsy is a sign that something is seriously wrong inside the fish. How to recognize them, and what you can do.
How to set up an Asian aquarium5 min read
Two aquariums from Southeast Asia: calm forest streams and peat swamps with soft, brown water, and fast mountain streams with cool, oxygen-rich water.
How to add new fish4 min read
From the store to the tank: how to get the fish used to your water, why you should add only a few at a time, and what to watch for in the first few days.