Following up on my post three months ago about "Brazilian Invisible Fish"
(also see the hoaxipedia article
), it looks like scientists have engineered a real transparent fish. It's not quite an invisible fish, because the internal organs are visible, but it's close. The Telegraph reports
[Dr. White] created the transparent fish by mating two existing breeds. Zebrafish have three pigments in their skin-reflective, black, and yellow. Dr White mated a breed that lacks reflective pigment, called "roy orbison", with one that lacks black pigment, called "nacre". The offspring had only yellow pigment in their skin, essentially looking clear. White named the new breed "casper", after the ghost.
If displayed in a store window, these transparent fish could probably draw as large a crowd as Reichenbach's invisible fish.