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