The Pearl Danio (Danio albolineatus), not to be confused with the Celestia Pearl Danio (Danio margaritatus), is a hardy danio species indigenous to Thailand. These fish have long pink bodies, sporting a blue-purple iridescence. They have an orange stripe on the latter half of their bodies and orange fins.
These fish are not only very attractive but extremely hardy as well. Because these fish like to live in groups of 5+, and because each Pearl Danio will grow up to 2" in length, it is recommended to keep them in 20-Gallon aquariums as a minimum. They prefer cooler water (64 F - 74 F) and prefer their pH to be as close to 7.0 as possible.
Pearl Danio are omnivores and are very energetic eaters. They will happily eat any foods provided, but it is best to provide a variety of options for best health and colouration.
While the Pearl Danio is a peaceful community fish, they may be a little too energetic (especially during feeding time) and stress out particularly docile or sensitive fish. Otherwise, they may be kept with most community fish, and many semi-aggressive community fish as well. Because they prefer to swim near the surface of the water, be careful to not mix them with other surface-dwelling species that may act territorially towards them (such as some Gourami species.)
Photo of a Pearl Danio by Sc99cs at English Wikipedia(Original text: Steven Coburn sc99cs) - Own work (Original text: self-made), Public Domain, for Wikipedia (English).