Yes, you heard that right. Glow in the dark/or under black light sushi!
According to http://www.glowingsushi.com/
"Glowing Sushi Cooking Show uses everyday ingredients and some simple kitchen chemistry to explore cutting edge biotechnology.
The GloFish® is a patented and trademarked brand of genetically modified (GM) fluorescent zebrafish sold by Yorktown Technologies. Although not originally developed for the ornamental fish trade, it is one of the first genetically modified animals to become publicly available as a pet. Although not originally developed for use in sushi, it is one of the first genetically modified animals to become publicly available as meat."
Video demo here: http://youtu.be/YQz60FBTfts