Verdict. While Rainbow Six 3: Black Arrow doesn't provide major changes to the original, it's an excellent expansion. For only $40, this is a must-have for any Xbox Live gamer. Those who play ...

These transparent fish turn rainbow with white light. Now, we know why. Light gets diffracted by repeated structures in the ghost catfish’s muscles.

Overall, Rainbow Six 3: Black Arrow is looking to provide a considerable value to anyone who was a big fan of the first Rainbow Six 3, what with the new maps, multiplayer modes, Xbox Live 3.0 ...

Other transparent fish, such as eel larvae and icefish, may get their shine in similar ways. Journal reference: Proceedings of the National Academy of Sciences DOI: 10.1073/pnas.2219300120 ...