What Is a Celestial Pearl Danio? Danios are tiny fish that live in Southeast Asia. Most prefer small streams. There are at least 25 different species of Danio, and the largest is only about 3 1/2 ...

Anyone considering a simple aquarium setup should know that every fish needs clean, stable water. Even hardy species need ...

The best types of fish for first-time owners are fuss-free, easy to maintain, and hardy. But just because they might be a dream to look after, it doesn’t mean they’re dull. In fact, many of the ...

A new study of giant danios (not pictured) suggests schools of fish save 79 percent more energy in turbulent conditions than fish swimming individually. Gordon Firestein via Wikimedia Commons under CC ...

Owing to a lack of basic information on the biology of zebrafish (Danio rerio), lab managers must often base decisions regarding the care and use of this species on anecdotal information. In an effort ...