鮨 - Qi2 - Epinephelus Septemfasciatus

Well, that’s what my dictionary says, anyway. You can see this character on this listing of fish species names, so I guess it isn’t too far off. But I chose this one because of its Japanese meaning: Sushi!

魚 - Yu2 - Fish
旨 - Zhi3 - Tasty

魚旨 = 鮨

Because of this, this Sushi Etiquette guide says that you should always eat the sushi with the fish on the left.

So if 鮨 means sushi in Japanese, how do you say it in Chinese?

壽司 - Shou4 Si1 - Sushi

And if you take the simplified version of the first character, you get an alternate (actually more common according to this survey) way to write sushi in Japanese: 寿司. As far as I can tell, the word 鮨, pronounced sushi in Japanese came first. It was then superceded (still in Japanese) by 寿司 which is pronounced the same as 鮨, and each character has some auspicious meaning or something. This was then, I’m guessing, backported to Chinese as 壽司.