ZEBRAFISH!!
So why is a transparent fish important? It isn't just a fancy little discovery with no relevance to the real world. By monitoring the neurons firing in this fish's mind, scientists can gain insight into how the human mind, as well as the minds of other animals, works. It may not seem like much right now, but if this research is successful, this is the start to the next advancement in the medical world.
I will admit, I may (or may not) have chosen this article because its title is "What's Your Fish Thinking," and I definitely wondered that about the fish in my aquarium growing up. When Finding Nemo came out, I learned that some fish have a memory span of 3 seconds, which further piqued my interest. However, this article is much more significant that just being able to tell a fish's thoughts. It could make it a lot easier someday for doctors to monitor the medicines they prescribe so that they know what actually works for certain patients--a symbol of hope, if you will. The human brain is kind of a miracle to me; it seems impossible that the normal person only uses 10% of his or her brain in a lifetime. If this is the key to knowing and actually understanding how our brains work, I look forward to seeing where this research goes.
http://news.sciencemag.org/sciencenow/2013/01/whats-your-fish-thinking.html?ref=hp
Photo cred: http://www.flickr.com/photos/chenhowen/2316701540/