Yeah! I know I'm 'boxy.' I get that a lot!
I may not appear to be sleek like most of my brethren, but I'm the only 
fish whose design was used for a prototype Mercedes to enable it to slip 
through the air with minimum drag resistance! Don't believe me? Have a 
look at this link:

http://www.the-scientist.com/?articles.view/articleNo/24272/title/Mercedes-and-the-boxfish/