The Leopard Danio is a very striking and easily recognized variety of the Zebra Danio Danio rerio. This handsome little fish only reaches about 2 1/4 inches (6 cm) in length, but is spotted rather than stripped. Truly a 'leopard with spots', it has an overall brownish gold metallic color stippled with many bluish gray spots. This variety has also been developed with long flowing fins which is called the Longfin Leopard Danio. But in either any form it is very eye-catching and every bit as active and hardy as its progenitors, making it a great fish for the beginner or any other fish keeper.