Red Koi Fish

The Red Koi Fish (similar to sardines) is what you use to summon the Mighty Dragon in Year of the Dragon. When the player shoots red koi fish out of the slingshot, the Mighty Dragon comes and defeats all the pigs in the area. When the player touches an eye symbol next to the pause sign, all the birds disintegrate and a red koi fish hops on the slingshot. It is scheduled that the Angry Birds Rio in March, 2012 and Angry Birds in June, 2012. After the mighty action figure button dissapears, the red koi fish and sardines will appear.

Trivia

 * In the Year of the Dragon Animation video, The Red Koi Fish is made of gold, and isn't red.
 * The koi fish in the animated video isn't a real fish, whereas the Red Koi Fish used to summon the Mighty Dragon is.