Coptic Christians put fish stickers on their cars and soon afterward, Muslims responded with shark stickers.
The story also mentions that the shark stickers are sold in Islamic bookstores and sometimes have Islamic slogans as well....
"The Christians had the fish so we responded with the shark. If they want to portray themselves as weak fishes, OK. We are the strongest," said Emad, who would give only his first name.
http://www.comeandsee.com/modules.php?n ... le&sid=508