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 ...

How The Zebrafish Gets His Stripe Date: September 28, 2007 Source: University of Bath Summary: Scientists have discovered how the zebrafish (Danio rerio) develops one of its four stripes.