These little guys were initially classed in the rasbora family (Micro Galaxy Rasbora) but have been moved over to the Danios (Celestial Pearl Danio)...
First found in 2006, it's now classed as endangered in its natural environment in (correct me if I'm wrong)... India?
Down here in Aust, these guys are going for AU$60 a pop directly from breeders... Rediculous prices... I've seen 'em in the states for about US$7 though...