Leopard Danios, (Danio rerio var. Frankei), are a hybrid variety of the Zebra Danio (Danio rerio). As such, they have been in the hobby for many years.
I purchased my group of fish from a local store called Jack’s Aquarium, but I believe they have since changed their name to Jack’s Pets as they have a variety of pets that they sell.
My fish are a rich golden color, but I will occasionally get a silvery blue fry and have often though of trying to develop a line of more blue colored fish.